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// Workers AI · dad joke modeWhy was Delaware data in a relationship? It had a mean connection.

From Wikipedia, the free encyclopedia

The U.S. State of Delaware currently has four statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated one combined statistical area, two metropolitan statistical areas, and one micropolitan statistical area in Delaware.[1] As of 2023, the largest statistical area in the state is the Philadelphia-Reading-Camden, PA-NJ-DE-MD Combined Statistical Area, which includes Delaware's largest city, Wilmington.

Statistical areas

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The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population,[2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core".[2] The OMB further divides a CBSA based on population into a metropolitan statistical area (MSA) for those with at least 50,000 people or a micropolitan statistical area (μSA) for those with 10,000 to 49,999 people.[2]

The OMB defines a combined statistical area (CSA) as two or more adjacent CBSAs where the employment interchange rate (percent commuting from A to B plus percent commuting from B to A) is at least 15%.[2] A primary statistical area (PSA) includes all CSAs and any CBSA that is not a constituent of a combined statistical area.

The four United States statistical areas and three counties of the State of Delaware[a]
Combined statistical area[1] 2025 population (est.)[3] Core-based statistical area[1] 2025 population (est.)[3] County 2025 population (est.)[3] Metropolitan division[1] 2025 population (est.)[3]
Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA 7,493,171
782,812 (DE)		 Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA 6,329,118
588,026 (DE)		 Philadelphia County, Pennsylvania 1,574,281 Philadelphia, PA MD 2,155,218
Delaware County, Pennsylvania 580,937
Montgomery County, Pennsylvania 877,643 Montgomery County-Bucks County-Chester County, PA MD 2,082,587
Bucks County, Pennsylvania 647,828
Chester County, Pennsylvania 557,116
Camden County, New Jersey 535,799 Camden, NJ MD 1,329,876
Burlington County, New Jersey 481,439
Gloucester County, New Jersey 312,638
New Castle County, Delaware 588,026 Wilmington, DE-MD-NJ MD 782,812
588,026 (DE)
Cecil County, Maryland 107,131
Salem County, New Jersey 66,280
Reading, PA MSA 440,072 Berks County, Pennsylvania 440,072 none
Atlantic City-Hammonton, NJ MSA 372,047 Atlantic County, New Jersey 278,657
Cape May County, New Jersey 93,390
Dover, DE MSA 194,786 Kent County, Delaware 194,786
Vineland, NJ MSA 157,148 Cumberland County, New Jersey 157,148
none Seaford, DE μSA 277,140 Sussex County, Delaware 277,140
State of Delaware 1,059,952
The three core-based statistical areas of the State of Delaware[b]
2025 rank Core-based statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA (DE) 588,026+3.03%570,719+5.99%538,479
2 Seaford, DE μSA 277,140+16.75%237,378+20.41%197,145
3 Dover, DE MSA 194,786+7.11%181,851+12.04%162,310
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA 6,329,118+1.35%6,245,051+4.69%5,965,343
The one combined statistical area of the State of Delaware[c]
2025 rank Combined statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA (DE) 782,812+4.02%752,570+7.39%700,789
Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA 7,493,171+1.54%7,379,700+4.41%7,067,807

See also

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Notes

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  1. ↑ An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in purple. A purple population number over a black population number show the total population versus the in-state population. The state's abbreviation is also shown next to the in-state total.
  2. ↑ For CBSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that CBSA as well as the CBSA's total population. Only the intrastate population is ranked.
  3. ↑ For CSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that CSA as well as the CSA's total population. Only the intrastate population is ranked.

References

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  1. 1 2 3 4 5 6 Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "OMB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved November 5, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 4 5 "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.
  3. 1 2 3 4 5 6 "County Population Totals and Components of Change: 2020-2025". United States Census Bureau, Population Division. July 2025. Retrieved January 27, 2026.
  4. 1 2 "PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved January 27, 2026.
  5. 1 2 "Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved January 27, 2026.
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38°59′23″N 75°30′18″W / 38.9896°N 75.5050°W / 38.9896; -75.5050 (State of Delaware)

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