// Workers AI · dad joke modeWhy did Sigma Xi go to the party? Because it was an x-ceptional guest.

Sigma Xi is an international scientific research honor society. In addition to collegiate chapters, the society maintains area and company-based chapters. Following is a list of Sigma Xi chapters, with active chapters indicated in bold and inactive chapters or institutions are in italics.

Chapter	Charter date and range	Institution or area	Location	Status	Ref.
Cornell	November 1886	Cornell University	Ithaca, New York	Active
R.P.I.	1887	Rensselaer Polytechnic Institute	Troy, New York	Active
Union	1887	Union College	Schenectady, New York	Active
Kansas	1890	University of Kansas	Lawrence, Kansas	Active
Yale	1895	Yale University	New Haven, Connecticut	Active
Minnesota	1896	University of Minnesota	Minneapolis, Minnesota	Active
Nebraska	1897	University of Nebraska–Lincoln	Lincoln, Nebraska	Active
Ohio State	1898	Ohio State University	Columbus, Ohio	Active
Penn	1899	University of Pennsylvania	Philadelphia, Pennsylvania	Active
Brown	1900	Brown University	Providence, Rhode Island	Active
Iowa	1900	University of Iowa	Iowa City, Iowa	Active
Stanford	1901	Stanford University	Stanford, California	Active
California	1902	University of California, Berkeley	Berkeley, California	Active
Columbia	1902	Columbia University	New York City, New York	Active
Chicago	1903	University of Chicago	Chicago, Illinois	Active
Michigan	1903	University of Michigan	Ann Arbor, Michigan	Active
Case Western Reserve	1904	Case Western Reserve University	Cleveland, Ohio	Active
Indiana	1904	Indiana University Bloomington	Bloomington, Indiana	Active
Colorado	1905	University of Colorado Boulder	Boulder, Colorado	Active
Missouri	1905	University of Missouri	Columbia, Missouri	Active
Northwestern	1906	Northwestern University	Evanston, Illinois	Active
Syracuse	1906	Syracuse area	Syracuse, New York	Active
Washington	1907	University of Washington	Seattle, Washington	Active
Wisconsin, Madison	1907	University of Wisconsin–Madison	Madison, Wisconsin	Active
Worcester Tech	1908	Worcester Polytechnic Institute	Worcester, Massachusetts	Active
Purdue	1909	Purdue University	West Lafayette, Indiana	Active
Washington (MO)	1910	Washington University in St. Louis	St. Louis, Missouri	Active
District of Columbia	1915	District of Columbia area	Washington, D.C.	Active
Texas	1915	University of Texas at Austin	Austin, Texas	Active
Mayo Foundation	1920	Mayo Clinic	Rochester, Minnesota	Active
North Carolina	1920	University of North Carolina at Chapel Hill	Chapel Hill, North Carolina	Active
North Dakota	1920	University of North Dakota	Grand Forks, North Dakota	Active
Iowa State	1921	Iowa State University	Ames, Iowa	Active
Idaho	1922	University of Idaho	Moscow, Idaho	Active
Kentucky	1922	University of Kentucky	Lexington, Kentucky	Active
McGill	1922	McGill community	Montreal, Quebec, Canada	Active
Rutgers	1922	Rutgers University–New Brunswick	Piscataway, New Jersey	Active
Oregon	1923	University of Oregon	Eugene, Oregon	Active
Swarthmore	1923	Swarthmore College	Swarthmore, Pennsylvania	Active
Caltech	1924	California Institute of Technology	Pasadena, California	Active
Johns Hopkins	1924	Johns Hopkins University	Baltimore, Maryland	Active
Virginia	1924	University of Virginia	Charlottesville, Virginia	Active
Cincinnati	1926	University of Cincinnati	Cincinnati, Ohio	Active
NYU	1926	New York University	New York City, New York	Active
Michigan State	1927	Michigan State University	East Lansing, Michigan	Active
Arizona	1928	University of Arizona	Tucson, Arizona	Active
Duke	1928	Duke University	Durham, North Carolina	Active
Illinois, Chicago Medicine	1928–19xx ?	University of Illinois College of Medicine	Chicago, Illinois	Inactive
Kansas State	1928	Kansas State University	Manhattan, Kansas	Active
Lehigh	1928	Lehigh University	Bethlehem, Pennsylvania	Active
Maryland	1928	University of Maryland, College Park	College Park, Maryland	Active
Oklahoma	1930	University of Oklahoma	Norman, Oklahoma	Active
Penn State	1930	Pennsylvania State University	University Park, Pennsylvania	Active
Rochester	1930	University of Rochester	Rochester, New York	Active
Washington State	1930	Washington State University	Pullman, Washington	Active
Wyoming	1930	Wyoming statewide	Laramie, Wyoming	Active
Harvard	1931	Harvard University	Cambridge, Massachusetts	Active
Pitt	1931	University of Pittsburgh	Pittsburgh, Pennsylvania	Active
Princeton	1932	Princeton University	Princeton, New Jersey	Active
Western Reserve	1932	Western Reserve University	Cleveland, Ohio	Consolidated
UCLA	1933	University of California, Los Angeles	Los Angeles, California	Active
MIT	1934	Massachusetts Institute of Technology	Cambridge, Massachusetts	Active
Greater New Orleans	1934	Greater New Orleans	New Orleans, Louisiana	Active
Carleton	1935	Carleton College	Northfield, Minnesota	Active
Smith	1935	Smith College	Northampton, Massachusetts	Active
Wesleyan	1935	Wesleyan University	Middletown, Connecticut	Active
SUNY Buffalo	1936	University at Buffalo	Buffalo, New York	Active
Carnegie Mellon	1937	Carnegie Mellon University	Pittsburgh, Pennsylvania	Active
George Washington	1937	George Washington University	Washington, D.C.	Active
Oregon State	1937	Oregon State University	Corvallis, Oregon	Active
Utah	1937	University of Utah	Salt Lake City, Utah	Active
Florida	1938	University of Florida	Gainesville, Florida	Active
Massachusetts	1938	University of Massachusetts Amherst	Amherst, Massachusetts	Active
Rice	1938	Rice University Texas Medical Center	Houston, Texas	Active
Wellesley	1938	Wellesley College	Wellesley, Massachusetts	Active
Alabama	1939	University of Alabama	Tuscaloosa, Alabama	Active
West Virginia	1939	West Virginia University	Morgantown, West Virginia	Active
USC	1940	University of Southern California	Los Angeles, California	Active
Virginia Tech	1940	Virginia Tech	Blacksburg, Virginia	Active
Bryn Mawr	1941	Bryn Mawr College	Bryn Mawr, Pennsylvania	Active
Oberlin	1941	Oberlin College	Cleveland, Ohio	Active
Illinois State/Illinois Wesleyan	1942	Illinois State University and Illinois Wesleyan University	Normal, Illinois	Active
Illinois Tech	1942	Illinois Institute of Technology	Chicago, Illinois	Active
LSU	1942	Louisiana State University	Baton Rouge, Louisiana	Active
Utah State	1942	Utah State University	Logan, Utah	Active
Polytechnic/SUNY Old Westbury	1943	New York Institute of Technology	Old Westbury, New York	Active
Radcliffe	1943–19xx ?	Radcliffe College	Cambridge, Massachusetts	Inactive
Tufts	1943	Tufts University	Medford, Massachusetts	Active
Emory	1944	Emory University	Atlanta, Georgia	Active
NC State	1944	North Carolina State University	Raleigh, North Carolina	Active
St. Louis University	1944	Saint Louis University	St. Louis, Missouri	Active
Vanderbilt	1944	Vanderbilt University	Nashville, Tennessee	Active
Wayne State	1944	Wayne State University	Detroit, Michigan	Active
Catholic	1945	Catholic University of America	Washington, D.C.	Active
Connecticut	1945	University of Connecticut	Storrs, Connecticut	Active
Texas Southwestern Medical Center	1945	University of Texas Southwestern Medical Center	Dallas, Texas	Active
Georgia	1946	University of Georgia	Athens, Georgia	Active
State University of West Georgia	1946–c. 1986	State University of West Georgia	Carrollton, Georgia	Inactive
Vermont	1946	Vermont statewide	Northfield, Vermont	Active
California Davis	1947	University of California, Davis	Davis, California	Active
Hawaii	1947	University of Hawaiʻi at Mānoa	Manoa, Hawaii	Active
Rockford	1947	Rockford University	Rockford, Illinois	Active
Maine	1948	University of Maine	Orono, Maine	Active
San Diego	1948	San Diego area	San Diego, California	Active
Frederick	1949	Frederick and Rockville area	Rockville, Maryland	Active
Oklahoma State	1949	Oklahoma State University–Stillwater	Stillwater, Oklahoma	Active
Temple	1949	Temple University	Philadelphia, Pennsylvania	Active
Amherst	1950	Amherst College	Amherst, Massachusetts	Active
Auburn	1950	Auburn University	Auburn, Alabama	Active
Brigham Young	1950	Brigham Young University	Provo, Utah	Active
CDC	1950	Centers for Disease Control and Prevention	Atlanta, Georgia	Active
Denver	1950	University of Denver	Denver, Colorado	Active
Montana State	1950	Montana State University	Bozeman, Montana	Active
Naval Research Laboratory-Edison	1950	United States Naval Research Laboratory - Edison	Washington, D.C.	Active
Tennessee	1950	University of Tennessee	Knoxville, Tennessee	Active
NYU Dentistry	1951	New York University College of Dentistry	New York City, New York	Active
Texas A&M	July 1, 1951	Texas A&M University	College Station, Texas	Active
Alfred	1952	Alfred University	Alfred, New York	Active
Argonne	1952	Argonne National Laboratory	Argonne, Illinois	Active
Boston	1952	Boston University	Boston, Massachusetts	Active
Notre Dame	1952	University of Notre Dame	Notre Dame, Indiana	Active
Columbia-Willamette	1952	Columbia River and Willamette River area	Portland, Oregon	Active
Kansas City	1952	Kansas City area	Kansas City, Missouri	Active
Triple Cities New York	1952	Binghamton area	Binghamton, New York	Active
Alamo	1953	San Antonio area	San Antonio, Texas	Active
Arconic	1953	New Kensington area	New Kensington, Pennsylvania	Active
Arkansas	1953	University of Arkansas	Fayetteville, Arkansas	Active
Colorado State	1953	Colorado State University	Fort Collins, Colorado	Active
Georgia Institute of Technology	1953	Georgia Tech	Atlanta, Georgia	Active
Rhode Island	1953	University of Rhode Island	Kingston, Rhode Island	Active
Rollins College	1953	Rollins College	Winter Park, Florida	Active
Tuskegee University	1953	Tuskegee University	Tuskegee, Alabama	Active
Brooklyn	1954	Brooklyn College	Brooklyn, New York	Active
Franklin and Marshall	1954	Franklin & Marshall College	Lancaster, Pennsylvania	Active
Lamar	1954	Lamar University	Beaumont, Texas	Active
Missouri S&T	1954	Missouri University of Science and Technology	Rolla, Missouri	Active
New Hampshire	1954	University of New Hampshire	Durham, New Hampshire	Active
New Mexico	1954	University of New Mexico	Albuquerque, New Mexico	Active
Stevens Tech	1954	Stevens Institute of Technology	Hoboken, New Jersey	Active
Texas, Medical	1954	University of Texas Medical Branch	Galveston, Texas	Active
Florida State	1955	Florida State University	Tallahassee, Florida	Active
Louisville	1955	Louisville area	Louisville, Kentucky	Active
Loyola, Chicago	1955	Loyola University Chicago	Chicago, Illinois	Active
Tennessee, Medical	1956		Tennessee	Inactive
Texas Woman's University	1956	Texas Woman's University	Denton, Texas	Active
Chesapeake	1957	Aberdeen Proving Ground	Aberdeen, Maryland	Active
Alabama, Birmingham	1957	University of Alabama at Birmingham	Birmingham, Alabama	Active
Army Research Laboratory	1957	United States Army Research Laboratory	Adelphi, Maryland	Active
Denison	1957	Denison University	Granville, Ohio	Active
Howard	1957	Howard University	Washington, D.C.	Active
Natick	1957	Natick area	Natick, Massachusetts	Active
New Mexico State	1957	New Mexico State University	Las Cruces, New Mexico	Active
Ohio Wesleyan	1957	Ohio Wesleyan University	Delaware, Ohio	Active
South Dakota	1957	University of South Dakota	Vermillion, South Dakota	Active
Fordham	1958	Fordham University	The Bronx, New York	Active
Louisiana Tech	1958	Louisiana Tech University	Ruston, Louisiana	Active
Naval Postgraduate School	1958	Naval Postgraduate School	Monterey, California	Active
Rockefeller	1958	Rockefeller University	New York City, New York	Active
South Carolina	1958	University of South Carolina	Columbia, South Carolina	Active
Tahoma	1958	Tahoma area	Puyallup, Washington	Active
Andrews-Whirlpool	1959	Andrews University and Whirlpool Corporation	Berrien Springs, Michigan	Active
Delaware	1959	University of Delaware	Newark, Delaware	Active
Knox	1959	Knox College	Galesburg, Illinois	Active
Vassar	1959	Vassar College	Poughkeepsie, New York	Active
Albion	1960	Albion College	Albion, Michigan	Active
Claremont Colleges	1960	Claremont McKenna College, Harvey Mudd College, and Pomona College	Claremont, California	Active
Jacksonville	1960	Jacksonville area	Jacksonville, Florida	Active
Marquette	1960	Marquette University	Milwaukee, Wisconsin	Active
New Mexico Highlands	1960	New Mexico Highlands University	Las Vegas, New Mexico	Active
San Francisco State	1960	San Francisco State University	San Francisco, California	Active
Texas Tech	1960	Texas Tech University	Lubbock, Texas	Active
University of Massachusetts Lowell	1960	University of Massachusetts Lowell	Lowell, Massachusetts	Active
Eckerd	1961	Eckerd College	St. Petersburg, Florida	Active
Ohio	1961	Ohio University	Athens, Ohio	Active
Puerto Rico at Mayaguez	1961	University of Puerto Rico at Mayagüez	Mayagüez, Puerto Rico	Active
South Dakota State	1961	South Dakota State University	Brookings, South Dakota	Active
Ball State	1962	Ball State University	Muncie, Indiana	Active
Chicago Medical	1962		Chicago, Illinois	Inactive
SUNY Stony Brook	1962	Stony Brook University	Stony Brook, New York	Active
Tidewater Virginia	1962	Tidewater	Newport News, Virginia	Active
Whitman College-Walla Walla University	1962	Whitman College and Walla Walla University	Walla Walla, Washington	Active
Central Arkansas	1963	Central Arkansas area	Little Rock, Arkansas	Active
California Riverside	1963	University of California, Riverside	Riverside, California	Active
VCU	1963	Virginia Commonwealth University	Richmond, Virginia	Active
North Dakota State	1963	North Dakota State University	Fargo, North Dakota	Active
American University	1964	American University	Washington, D.C.	Active
Montana	1964	University of Montana	Missoula, Montana	Active
Wichita State	1964	Wichita State University	Wichita, Kansas	Active
Arizona State	1965	Arizona State University	Phoenix, Arizona	Active
Black Hills Regional	1965	Black Hills region	Rapid City, South Dakota	Active
Cincinnati Federal Environmental	1965	United States Environmental Protection Agency Cincinnati	Cincinnati, Ohio	Active
Colorado Mines	1965	Colorado School of Mines	Golden, Colorado	Active
Hamilton	1965	Hamilton College	Clinton, New York	Active
Marshall	1965	Marshall University	Huntington, West Virginia	Active
Merrimack	1965	Merrimack College	North Andover, Massachusetts	Active
Northeastern	1965	Northeastern University	Boston, Massachusetts	Active
Orange County	1965	Orange County	San Clemente, California	Active
South Dakota Mines	1965	South Dakota School of Mines and Technology	Rapid City, South Dakota	Inactive
SUNY Plattsburgh	1965	State University of New York at Plattsburgh	Plattsburgh, New York	Active
Tulsa	1965	Tulsa area	Tulsa, Oklahoma	Active
Wake Forest	1965	Wake Forest University	Winston-Salem, North Carolina	Active
Wisconsin-Oshkosh	1965	University of Wisconsin–Oshkosh	Oshkosh, Wisconsin	Active
Boston College	1966	Boston College	Chestnut Hill, Massachusetts	Inactive
Charlotte	1966	Charlotte area	Charlotte, North Carolina	Active
Clemson	1966	Clemson University	Clemson, South Carolina	Active
Fairleigh Dickinson	1966	Fairleigh Dickinson University	Teaneck, New Jersey	Active
Greensboro	1966	Greensboro area	Greensboro, North Carolina	Active
Houston	1966	University of Houston	Houston, Texas	Active
Idaho State	1966	Idaho State University	Pocatello, Idaho	Active
Ithaca	1966	Ithaca College	Ithaca, New York	Active
KU Med	1966	University of Kansas Medical Center	Kansas City, Kansas	Active
Minnesota State, Mankato	1966–1968	Minnesota State University, Mankato	Mankato, Minnesota	Inactive
Mississippi State	1966	Mississippi State University	Starkville, Mississippi	Active
Montana Tech	1966	Montana Technological University	Butte, Montana	Active
Southern Illinois Carbondale	1966	Southern Illinois University Carbondale	Carbondale, Illinois	Active
SUNY Fredonia	1966	State University of New York at Fredonia	Fredonia, New York	Active
Tennessee Tech	1966	Tennessee Tech	Cookeville, Tennessee	Active
Ursinus	1966	Ursinus College	Collegeville, Pennsylvania	Active
Weber State University	1966	Weber State University	Ogden, Utah	Active
Eastern Kentucky University	1967	Eastern Kentucky University	Richmond, Kentucky	Active
Eastern New Mexico University	1967	Eastern New Mexico University	Portales, New Mexico	Active
Eastern Washington University Spokane	1967	Eastern Washington University Spokane	Spokane, Washington	Active
Georgetown	1967	Georgetown University	Washington, D.C.	Active
John Deere	1967	John Deere	Rock Island, Illinois	Active
Kent	1967	Kent State University	Kent, Ohio	Active
Loyola Marymount	1967	Loyola Marymount University	Los Angeles, California	Active
Mississippi Medical	1967	University of Mississippi Medical Center	Jackson, Mississippi	Active
Mount Holyoke	1967	Mount Holyoke College	South Hadley, Massachusetts	Active
Northern Arizona	1967	Northern Arizona	Flagstaff, Arizona	Active
Ohio Northern	1967	Ohio Northern University	Ada, Ohio	Active
Puerto Rico at San Juan	1967	University of Puerto Rico, Río Piedras Campus	San Juan, Puerto Rico	Active
Santa Clara	1967	Santa Clara University	Santa Clara, California	Active
Sonoma State	1967	Sonoma State University	Rohnert Park, California	Active
Southern Mississippi	1967	University of Southern Mississippi	Hattiesburg, Mississippi	Active
Texas Christian	1967	Texas Christian University	Fort Worth, Texas	Active
Thomas Jefferson	1967	Thomas Jefferson University	Philadelphia, Pennsylvania	Active
Tri-Cities Washington	1967	Richland, Kennewick, and Pasco area	Richland, Washington	Active
U.S. Naval Academy	1967	United States Naval Academy	Annapolis, Maryland	Active
Western Kentucky	1967	Western Kentucky University	Bowling Green, Kentucky	Active
Baylor	1968	Baylor University	Waco, Texas	Active
Dartmouth	1968	Dartmouth College	Hanover, New Hampshire	Active
Gustavus Adolphus	1968	Gustavus Adolphus College	St. Peter, Minnesota	Active
Manhattan College	1968	Manhattan College	The Bronx, New York	Active
Manitoba	1968	University of Manitoba	Winnipeg, Manitoba, Canada	Active
Middle Tennessee State	1968	Middle Tennessee State University	Murfreesboro, Tennessee	Active
Northern Michigan	1968	Northern Michigan University	Marquette, Michigan	Active
Queens College	1968	Queens College, City University of New York	Queens, New York	Active
Scranton	1968	University of Scranton	Scranton, Pennsylvania	Active
Tifton	1968	Tifton area	Tifton, Georgia	Active
Western Carolina	1968	Western Carolina University	Cullowhee, North Carolina	Active
Wisconsin–La Crosse	1968	University of Wisconsin–La Crosse	La Crosse, Wisconsin	Active
Appalachian State	1969	Appalachian State University	Boone, North Carolina	Active
Central Florida	1969	University of Central Florida	Orlando, Florida	Active
Delta	1969	Boston area	Boston, Massachusetts	Active
Hunter	1969	Hunter College	New York City, New York	Inactive
Indiana, Indianapolis Medical	1969	Indiana University School of Medicine	Indianapolis, Indiana	Active
Indiana University	1969	Indiana University of Pennsylvania	Indiana, Pennsylvania	Active
Miami	1969	University of Miami	Coral Gables, Florida	Active
Northern Illinois	1969	Northern Illinois University	DeKalb, Illinois	Active
Southern Illinois Edwardsville	1969	Southern Illinois University Edwardsville	Edwardsville, Illinois	Active
SUNY Health Science Center	April 8, 1969	SUNY Downstate Medical Center	Brooklyn, New York	Active
Akron	1969	University of Akron	Akron, Ohio	Active
Nevada	1969	University of Nevada, Reno	Reno, Nevada	Active
Rider	1969	Rider University	Lawrence Township, New Jersey	Active
Williams	1969	Williams College	Williamstown, Massachusetts	Active
Wright State	1969	Wright State University	Fairborn, Ohio	Active
Albany, New York	1970	Albanay area	Albany, New York	Active
California Santa Barbara	1970	University of California, Santa Barbara	Santa Barbara County, California	Active
Central Oklahoma	1970	University of Central Oklahoma	Edmond, Oklahoma	Active
Hartford	1970	University of Hartford	West Hartford, Connecticut	Active
Massachusetts Dartmouth	1970	University of Massachusetts Dartmouth	North Dartmouth, Massachusetts	Active
SUNY Oswego	1970	State University of New York at Oswego	Oswego, New York	Active
Tennessee at Martin	1970	University of Tennessee at Martin	Martin, Tennessee	Active
Youngstown State	1970	Youngstown State University	Youngstown, Ohio	Active
Clarkson	1971	Clarkson University	Potsdam, New York	Active
CUNY	1971	City University of New York	New York City, New York	Active
East Stroudsburg	1971	East Stroudsburg University of Pennsylvania	East Stroudsburg, Pennsylvania	Active
Food and Drug Administration	1971	Food and Drug Administration	Washington, D.C.	Active
George Mason	1971	George Mason University	Fairfax, Virginia	Active
Hampden Sydney/Longwood	1971	Hampden–Sydney College and Longwood University	Hampden Sydney, Virginia	Active
Michigan Tech	1971	Michigan Technological University	Houghton, Michigan	Active
Montclair State	1971	Montclair State University	Montclair, New Jersey	Active
National Institute of Standards and Technology	1971	National Institute of Standards and Technology	Gaithersburg, Maryland	Active
Saint Joseph's	1971	Saint Joseph's University	Philadelphia, Pennsylvania	Active
Alaska	1972	Alaska statewide	Fairbanks, Alaska	Active
Drexel	1972	Drexel University	Philadelphia, Pennsylvania	Active
Miami (OH)	1972	Miami University	Oxford, Ohio	Active
Texas, Arlington	1972	University of Texas at Arlington	Arlington, Texas	Active
Mississippi	1972	University of Mississippi	University, Mississippi	Active
Avalon	1973	St. John's area	St. John's, Newfoundland and Labrador, Canada	Active
California State Northridge	1973	California State University, Northridge	Northridge, Los Angeles, California	Active
General Motors R&D Center	1973	General Motors Technical Center	Warren, Michigan	Active
Newark	1973	Rutgers University–Newark	Newark, New Jersey	Active
Rush	1973	Rush University	Chicago, Illinois	Active
Wisconsin-Milwaukee	1973	University of Wisconsin–Milwaukee	Milwaukee, Wisconsin	Active
East Carolina	1974	East Carolina University	Greenville, North Carolina	Active
Pace	1974	Pace University	Pleasantville, New York	Active
Pikes Peak	1974	Colorado College and University of Colorado Colorado Springs	Colorado Springs, Colorado	Active
Portland State	1974	Portland State University	Portland, Oregon	Active
Boise State University	1975	Boise State University	Boise, Idaho	Active
Bowling Green	1975	Bowling Green State University	Bowling Green, Ohio	Active
Chattanooga	1975	University of Tennessee at Chattanooga	Chattanooga, Tennessee	Active
Georgia Medical	1975	Medical College of Georgia	Augusta, Georgia	Inactive
Hawaii Hilo	1975	University of Hawaiʻi at Hilo	Hilo, Hawaii	Active
Lehman	1975	Lehman College	New York City, New York	Active
Oakland	1975–19xx ?	Oakland area	Oakland, California	Inactive
Omaha	1975	Omaha area	Omaha, Nebraska	Active
Texas, El Paso	1975	University of Texas at El Paso	El Paso, Texas	Active
Dayton	1975	University of Dayton	Dayton, Ohio	Active
Oakland	1975	Oakland University	Rochester, Michigan	Active
Ramapo	1975	Ramapo College	Mahwah, New Jersey	Active
South Alabama	1975	University of South Alabama	Mobile, Alabama	Active
Loma Linda	1976	Loma Linda University	Loma Linda, California	Active
New Jersey Tech	1976	New Jersey Institute of Technology	Newark, New Jersey	Active
Oklahoma Health Science Center	1976	University of Oklahoma Health Sciences Center	Oklahoma City, Oklahoma	Active
Southern Methodist	1976	Southern Methodist University	University Park, Texas	Active
Toledo	1976	University of Toledo	Toledo, Ohio	Active
Abbott Laboratories	1977	Abbott Laboratories	Green Oaks, Illinois	Active
Guelph	1977	University of Guelph	Guelph, Ontario, Canada	Active
Murray State	1978	Murray State University	Murray, Kentucky	Active
Western Connecticut State	1979	Western Connecticut State University	Danbury, Connecticut	Active
Calgary	1980	University of Calgary	Calgary, Alberta, Canada	Active
Quinnipiac	1980	Quinnipiac area	Hamden, Connecticut	Active
Ottawa	1983	Ottawa area	Ottawa, Ontario, Canada	Active
Texas at Dallas	1983	University of Texas at Dallas	Richardson, Texas	Active
University of Toronto	1983	University of Toronto	Toronto, Ontario, Canada	Active
Philadelphia College	1984	Philadelphia College of Osteopathic Medicine	Philadelphia, Pennsylvania	Active
Purdue Fort Wayne	1984	Purdue University Fort Wayne	Fort Wayne, Indiana	Active
Greenbrier Valley	1985	Greenbrier Valley area	Lewisburg, West Virginia	Active
Northwestern Pennsylvania	1985	Northwestern Pennsylvania	Erie, Pennsylvania	Active
Rhode Island College	1985	Rhode Island College	Providence, Rhode Island	Active
Asheville	1986	University of North Carolina at Asheville	Asheville, North Carolina	Active
Australian	1986	Australia nationwide	Murdoch, Western Australia, Australia	Active
Nebraska at Kearney	1986	University of Nebraska at Kearney	Kearney, Nebraska	Active
Wilmington	1986	University of North Carolina Wilmington	Wilmington, North Carolina	Active
Villanova	1989	Villanova University	Villanova, Pennsylvania	Active
Woods Hole	1989	Woods Hole Oceanographic Institution	Woods Hole, Massachusetts	Active
Southern Maine	1990	University of Southern Maine	Lewiston, Maine	Active
Charleston	1991	Charleston area	Charleston, South Carolina	Active
Research Triangle Park	1991	Research Triangle Park	Research Triangle Park, North Carolina	Active
Shenandoah Valley	1991	Harrisonburg area	Harrisonburg, Virginia	Active
California Irvine	1991	University of California, Irvine	Irvine, California	Active
South Florida Water Management District	1992	South Florida Water Management District	West Palm Beach, Florida	Active
Swiss	1992	Switzerland nationwide	Bern, Switzerland	Active
Southern Oregon	1993	Southern Oregon	Ashland, Oregon	Active
University of Alberta	1993	University of Alberta	Edmonton, Alberta, Canada	Active
SUNY Purchase	1996	State University of New York at Purchase	Purchase, New York	Active
Eastern Illinois	1997	Eastern Illinois University	Charleston, Illinois	Active
Barry University	1998	Barry University	Miami Shores, Florida	Active
Grove City	1998	Grove City College	Grove City, Pennsylvania	Active
South Texas	1999	South Texas	Corpus Christi, Texas	Active
Fairfield University	2000	Fairfield University	Fairfield, Connecticut	Active
Carthage	2001	Carthage College	Kenosha, Wisconsin	Active
Washington College	2001	Washington College	Chestertown, Maryland	Active
Tarleton State	2003	Tarleton State University	Stephenville, Texas	Active
Mercer	2005	Mercer University	Macon, Georgia	Active
Missouri–St. Louis	2006	University of Missouri–St. Louis	St. Louis, Missouri	Active
California, Merced	2007	University of California, Merced	Merced, California	Active
Florida International	2007	Florida International University	University Park, Florida	Active
Providence College	2008	Providence College	Providence, Rhode Island	Active
Mount Saint Vincent	2009	University of Mount Saint Vincent	Riverdale, Bronx, New York	Active
Nordic	2009	Norway, Sweden, Finland, and Iceland	Espoo, Finland	Active
North Shore	2009	Salem, Wenham, and Beverly communities	Salem, Massachusetts	Active
Findlay	2010	University of Findlay	Findlay, Ohio	Active
Purdue Calumet	2012	Purdue University Northwest	Hammond, Indiana	Active
Radford	2014	Radford University	Radford, Virginia	Active
West Chester	April 12, 2016	West Chester University	West Chester, Pennsylvania	Active
South Florida	2018	University of South Florida	Tampa, Florida	Active
Austin College	March 7, 2019	Austin College	Sherman, Texas	Active
Nova Southeastern	September 19, 2019	Nova Southeastern University	Fort Lauderdale, Florida	Active
Midwestern University	May 18, 2021	Midwestern University	Glendale, Arizona	Active
Whitworth	May 2021	Whitworth University	Spokane, Washington	Active
Elmezzi Graduate School	March 30, 2023	Elmezzi Graduate School of Molecular Medicine	Manhasset, New York	Active
Air Force Dayton		Wright-Patterson Air Force Base	Dayton, Ohio	Active
Albany		Albany area	Albany, Oregon	Active
American University of Beirut		American University of Beirut	Beirut, Lebanon	Active
Arkansas State		Arkansas State University	State University, Arkansas	Active
Atlanta University Center		Atlanta University Center	Atlanta, Georgia	Active
Bangkok		Bangkok area	Bangkok, Thailand	Active
Baylor College of Dentistry		Baylor College of Dentistry	Dallas, Texas	Inactive
Berry College		Berry College	Mount Berry, Georgia	Active
Boeing North America		Boeing	Seal Beach, California	Active
BP America		BP America	New York	Active
Bridgeport		University of Bridgeport	Bridgeport, Connecticut	Active
British Columbia		University of British Columbia	Vancouver, British Columbia, Canada	Active
Bucknell		Bucknell University	Lewisburg, Pennsylvania	Active
Butler-Indianapolis		Butler University	Indianapolis, Indiana	Active
C. W. Post		C. W. Post College	Brookville, New York	Inactive
Cal Poly		California Polytechnic State University, San Luis Obispo	San Luis Obispo, California	Active
Cal Poly Pomona		California State Polytechnic University, Pomona	Pomona, California	Active
California State Bakersfield		California State University, Bakersfield	Bakersfield, California	Active
California State Chico		California State University, Chico	Chico, California	Active
California State Dominguez Hills		California State University, Dominguez Hills	Carson, California	Active
California Santa Cruz		University of California, Santa Cruz	Santa Cruz, California	Active
California State Fresno		California State University, Fresno	Fresno, California	Inactive
California State Hayward		California State University, Hayward	Hayward, California	Inactive
California State Long Beach		California State University, Long Beach	Long Beach, California	Active
California State Sacramento		California State University, Sacramento	Sacramento, California	Active
California State San Bernardino		California State University, San Bernardino	San Bernardino, California	Active
Calspan		Calspan	Buffalo, New York	Active
Center for Naval Analyses		Center for Naval Analyses	Alexandria, Virginia	Active
Central Michigan		Central Michigan University	Mount Pleasant, Michigan	Active
Central Missouri		University of Central Missouri	Warrensburg, Missouri	Inactive
Central Savannah River Area		Central Savannah River Area	Aiken, South Carolina	Active
Central Texas Research Society		Central Texas Research Society	Temple, Texas	Inactive
China Lake		Naval Air Weapons Station China Lake	Ridgecrest, California	Active
CINVESTAV		CINVESTAV	Mexico City, Mexico	Active
City College of New York		City College of New York	New York City, New York	Active
Clear Lake		Clear Lake	Houston, Texas	Active
College of the Holy Cross		College of the Holy Cross	Worcester, Massachusetts	Inactive
Colorado State University Pueblo		Colorado State University Pueblo	Pueblo, Colorado	Inactive
Corning		Corning Incorporated	Corning, New York	Active
David W. Taylor		Carderock Division of the Naval Surface Warfare Center	Bethesda, Maryland	Active
Depauw-Wabash		Depauw University and Wabash College	Crawfordsville, Indiana	Active
DOE/NRC		United States Department of Energy and Nuclear Regulatory Commission	Rockville, Maryland	Active
Dubuque		University of Dubuque	Dubuque, Iowa	Inactive
DuPont		DuPont Experimental Station	Wilmington, Delaware	Active
Duquesne		Duquesne University	Pittsburgh, Pennsylvania	Inactive
Eastern Michigan		Eastern Michigan University	Ypsilanti, Michigan	Active
Eastern Oregon University		Eastern Oregon University	La Grande, Oregon	Inactive
Emporia State		Emporia State University	Emporia, Kansas	Inactive
Ferris State		Ferris State University	Big Rapids, Michigan	Inactive
Florida A&M		Florida A&M University	Tallahassee, Florida	Active
Florida Atlantic		Florida Atlantic University	Boca Raton, Florida	Active
Florida Institute of Technology		Florida Institute of Technology	Melbourne, Florida	Inactive
Ford Motor Company		Ford Motor Company	Dearborn, Michigan	Active
Fort Hays		Fort Hays State University	Hays, Kansas	Active
Four Corners		Multi-campus collegiate	Durango, Colorado	Active
Georgia Southern		Georgia Southern University	Statesboro, Georgia	Active
Grand Valley		Grand Valley State University	Allendale, Michigan	Active
Greater Des Moines		Greater Des Moines	Des Moines, Iowa	Active
GTE Laboratories		GTE Laboratories	Waltham, Massachusetts	Inactive
Gulf Coast		Gulf Coast	Stennis Space Center, Mississippi	Active
Hartford		Hartford area	Hartford, Connecticut	Active
Hollins		Hollins University	Roanoke, Virginia	Active
Hope College		Hope College	Holland, Michigan	Active
Hughes Laboratories		Hughes Research Laboratories	Malibu, California	Inactive
Humboldt State University		Humboldt State University	Arcata, California	Inactive
Hungarian		Hungary nationwide	Budapest, Hungary	Active
Huntsville	19xx ?–19xx ?	University of Alabama in Huntsville	Huntsville, Alabama	Inactive
Iberian		Iberian Peninsula	Spain	Active
Johnson & Johnson		Johnson & Johnson	Spring House, Pennsylvania	Active
Kalamazoo		Kalamazoo area	Kalamazoo, Michigan	Active
Kennesaw State		Kennesaw State University	Kennesaw, Georgia	Inactive
Kirksville		Kirksville area	Kirksville, Missouri	Active
Lafayette		Lafayette College	Easton, Pennsylvania	Active
Lake Forest		Lake Forest College	Lake Forest, Illinois	Inactive
LLNL		Lawrence Livermore National Laboratory	Livermore, California	Active
Lynchburg		University of Lynchburg	Lynchburg, Virginia	Inactive
M. W. Kellogg		M.W. Kellogg	Houston, Texas	Inactive
Magic Valley		Magic Valley area	Kimberly, Idaho	Active
Mesa State College		Colorado Mesa University	Grand Junction, Colorado	Inactive
McDaniel		McDaniel College	Westminster, Maryland	Inactive
McMaster		McMaster University	Hamilton, Ontario, Canada	Active
Memphis		University of Memphis	Memphis, Tennessee	Active
Minnesota Duluth		University of Minnesota Duluth	Duluth, Minnesota	Active
Minot State		Minot State University	Minot, North Dakota	Active
Missouri State		Missouri State University	Springfield, Missouri	Active
Monterrey Institute		Monterrey Institute of Technology and Higher Education	Monterrey, Nuevo Leon, Mexico	Active
Mount Sinai		Mount Sinai School of Medicine	New York City, New York	Inactive
Muskingum		Muskingum University	New Concord, Ohio	Active
Nalco Chemical		Nalco Chemical Company	Naperville, Illinois	Active
Naval Air Warfare Center Training Systems		Naval Air Warfare Center Training Systems Division	Orlando, Florida	Active
New Mexico Tech		New Mexico Institute of Mining and Technology	Socorro, New Mexico	Active
New Zealand		New Zealand countrywide	Wellington, New Zealand	Active
North Carolina Central		North Carolina Central University	Durham, North Carolina	Active
North Texas		University of North Texas	Denton, Texas	Inactive
Northeastern State		Northeastern State University	Tahlequah, Oklahoma	Inactive
Northern Colorado		University of Northern Colorado	Greeley, Colorado	Inactive
Northern Iowa		University of Northern Iowa	Cedar Falls, Iowa	Active
Northern Kentucky		Northern Kentucky University	Highland Heights, Kentucky	Inactive
Northern Westchester		Northern Westchester area	Westchester County, New York	Active
Northwest Indiana		Northwest Indiana	Gary, Indiana	Active
Northwestern State		Northwestern State University	Natchitoches, Louisiana	Inactive
Olin		Olin Corporation	Cheshire, Connecticut	Active
Oneonta		Oneonta area	Oneonta, New York	Active
Panama City		Panama City area	Panama City, Florida	Active
Peoria		Peoria area	Peoria, Illinois	Active
Picatinny		Picatinny Arsenal	Mendham Borough, New Jersey	Active
Prague Institute of Advanced Studies		Prague Institute of Advanced Studies	Prague, Czech Republic	Active
Prairie View		Prairie View A&M University	Prairie View, Texas	Active
Regis College		Regis College	Weston, Massachusetts	Inactive
Richmond		University of Richmond	Richmond, Virginia	Inactive
Roanoke College		Roanoke College	Salem, Virginia	Inactive
Roche Research		Roche Research	Nutley, New Jersey	Active
Rosalind Franklin		Rosalind Franklin University of Medicine and Science	North Chicago, Illinois	Inactive
Saint Bonaventure		St. Bonaventure University	St. Bonaventure, New York	Inactive
St. Cloud State		St. Cloud State University	St. Cloud, Minnesota	Active
Saint Mary's College of California		Saint Mary's College of California	Moraga, California	Active
Sam Houston State		Sam Houston State University	Huntsville, Texas	Active
San Joaquin Valley		San Joaquin Valley	Stockton, California	Active
San Jose State		San Jose State University	San Jose, California	Active
Sangamon State		Sangamon State University	Springfield, Illinois	Inactive
Savannah		Savannah area	Savannah, Georgia	Active
Seton Hall		Seton Hall University	South Orange, New Jersey	Active
Shreveport		Shreveport area	Shreveport, Louisiana	Active
Sigma Xi Georgia		Georgia nationwide	Tbilisi, Georgia	Active
Sigma Xi Moscow		Moscow area	Moscow, Russia	Active
Sigma Xi Romania		Romania nationwide	Bucharest, Romania	Active
Slippery Rock		Slippery Rock University	Slippery Rock, Pennsylvania	Active
Southcentral Pennsylvania		South Central Pennsylvania	Waynesboro, Pennsylvania	Active
Southeast Missouri State		Southeast Missouri State University	Cape Girardeau, Missouri	Inactive
Southern Appalachian		Southern Appalachian area	Johnson City, Tennessee	Active
Southern Indiana		Southern Indiana	Evansville, Indiana	Active
Southern University		Southern University	Baton Rouge, Louisiana	Inactive
State University College at Buffalo		State University College at Buffalo	Buffalo, New York	Inactive
State University College at New Paltz		State University College at New Paltz	New Paltz, New York	Inactive
Stephen F. Austin		Stephen F. Austin State University	Nacogdoches, Texas	Inactive
SUNY Brockport		State University College at Brockport	Brockport, New York	Inactive
SUNY Cortland		State University of New York at Cortland	Cortland, New York	Active
Tampa Bay		Tampa Bay area	Tampa, Florida	Active
Tennessee A&I Fisk-Meharry		Tennessee State University, Fisk University, and Meharry Medical College	Nashville, Tennessee	Active
Texas A&M– Commerce		Texas A&M University–Commerce	Commerce, Texas	Inactive
Texas Rio Grande Valley		University of Texas Rio Grande Valley	Brownsville, Texas	Inactive
Towson		Towson University	Baltimore, Maryland	Active
Tri-State		Tri-State University	Angola, Indiana	Inactive
UL Lafayette		University of Louisiana at Lafayette	Lafayette, Louisiana	Inactive
UL Monroe		University of Louisiana at Monroe	Monroe, Louisiana	Inactive
UNAM		National Autonomous University of Mexico	Mexico City, Mexico	Active
University of Connecticut Health Center		UConn Health	Farmington, Connecticut	Inactive
University of Illinois		University of Illinois Urbana-Champaign	Champaign, Illinois	Inactive
University of Illinois Chicago		University of Illinois Chicago	Chicago, Illinois	Inactive
University of the South		University of the South	Sewanee, Tennessee	Inactive
UNLV		University of Nevada, Las Vegas	Las Vegas, Nevada	Active
USciences		University of the Sciences	Philadelphia, Pennsylvania	Inactive
UT Health Science Center		University of Tennessee Health Science Center	Memphis, Tennessee	Active
Ventura County		Ventura County	Ventura, California	Active
Virginia State		Virginia State University	Petersburg, Virginia	Inactive
Wabash Valley		Wabash Valley area	Terre Haute, Indiana	Active
Waterways Experiment Station		Waterways Experiment Station	Vicksburg, Mississippi	Active
Westchester		Westchester County	New York	Active
Western Illinois		Western Illinois University	Macomb, Illinois	Inactive
Western Pennsylvania		Western Pennsylvania	Pennsylvania	Active
Western Washington		Western Washington University	Bellingham, Washington	Active
Wilkes		Wilkes University	Wilkes-Barre, Pennsylvania	Inactive
William Paterson		William Paterson University	Wayne, New Jersey	Inactive
Wisconsin-Eau Claire/Stout		University of Wisconsin–Eau Claire and University of Wisconsin–Stout	Eau Claire, Wisconsin	Inactive
Wisconsin-Green Bay		University of Wisconsin–Green Bay	Green Bay, Wisconsin	Active
Wisconsin-Stevens Point		University of Wisconsin–Stevens Point	Stevens Point, Wisconsin	Inactive
Wittenberg		Wittenberg University	Springfield, Ohio	Inactive
WSU Vancouver		Washington State University Vancouver	Vancouver, Washington	Inactive
Wooster		Wooster area	Wooster, Ohio	Active