// Workers AI · dad joke modeWhy did Iowa statistical areas go to therapy? They had a lot of figures to work through.
The U.S. State of Iowa currently has 31 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated seven combined statistical areas, nine metropolitan statistical areas, and 15 micropolitan statistical areas in Iowa.[1] As of 2025, the largest of these is the Des Moines–West Des Moines–Ames, IA CSA, comprising the area around Iowa's capital and largest city, Des Moines.
Statistical areas
[edit]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.
| 2025 rank | Core-based statistical area[1] | Population | ||||
|---|---|---|---|---|---|---|
| 2025 estimate[3] | Change | 2020 Census[4] | Change | 2010 Census[5] | ||
| 1 | Des Moines–West Des Moines, IA MSA | 758,539 | +6.92% | 709,466 | +16.98% | 606,475 |
| 2 | Cedar Rapids, IA MSA | 279,285 | +1.00% | 276,520 | +7.20% | 257,940 |
| 3 | Iowa City, IA MSA | 182,711 | +4.16% | 175,419 | +14.96% | 152,586 |
| 4 | Davenport–Moline–Rock Island, IA-IL MSA (IA) | 175,259 | +0.34% | 174,669 | +5.72% | 165,224 |
| 5 | Waterloo–Cedar Falls, IA MSA | 169,189 | +0.43% | 168,461 | +0.38% | 167,819 |
| 6 | Ames, IA MSA | 128,090 | +2.27% | 125,252 | +8.12% | 115,848 |
| 7 | Omaha, NE-IA MSA (IA) | 122,412 | −0.26% | 122,733 | −0.33% | 123,145 |
| 8 | Sioux City, IA-NE-SD MSA (IA) | 106,649 | +0.67% | 105,941 | +3.69% | 102,172 |
| 9 | Dubuque, IA MSA | 99,381 | +0.12% | 99,266 | +5.99% | 93,653 |
| 10 | Mason City, IA μSA | 49,710 | −1.70% | 50,570 | −2.28% | 51,749 |
| 11 | Clinton, IA μSA | 46,002 | −0.99% | 46,460 | −5.41% | 49,116 |
| 12 | Muscatine, IA μSA | 41,853 | −3.20% | 43,235 | +1.15% | 42,745 |
| 13 | Marshalltown, IA μSA | 39,890 | −0.54% | 40,105 | −1.34% | 40,648 |
| 14 | Burlington, IA-IL μSA (IA) | 38,077 | −2.14% | 38,910 | −3.51% | 40,325 |
| 15 | Fort Dodge, IA μSA | 36,838 | −0.44% | 36,999 | −2.67% | 38,013 |
| 16 | Ottumwa, IA μSA | 35,210 | −0.64% | 35,437 | −0.53% | 35,625 |
| 17 | Pella, IA μSA | 34,192 | +2.33% | 33,414 | +0.32% | 33,309 |
| 18 | Fort Madison, IA μSA | 32,306 | −3.72% | 33,555 | −6.43% | 35,862 |
| 19 | Le Mars, IA μSA | 25,697 | 0.00% | 25,698 | +2.85% | 24,986 |
| 20 | Oskaloosa, IA μSA | 21,880 | −1.40% | 22,190 | −0.85% | 22,381 |
| 21 | Storm Lake, IA μSA | 20,449 | −1.80% | 20,823 | +2.78% | 20,260 |
| 22 | Carroll, IA μSA | 20,303 | −2.20% | 20,760 | −0.27% | 20,816 |
| 23 | Spirit Lake, IA μSA | 18,077 | +2.11% | 17,703 | +6.22% | 16,667 |
| 24 | Spencer, IA μSA | 16,202 | −1.11% | 16,384 | −1.70% | 16,667 |
| Burlington, IA-IL μSA | 44,061 | −2.73% | 45,297 | −4.95% | 47,656 | |
| Davenport–Moline–Rock Island, IA-IL MSA | 380,452 | −1.01% | 384,324 | +1.49% | 378,666 | |
| Omaha, NE-IA MSA | 1,009,836 | +4.36% | 967,604 | +11.82% | 865,350 | |
| Sioux City, IA-NE-SD MSA | 145,738 | +0.97% | 144,334 | +4.91% | 137,577 | |
| 2025 rank | Combined statistical area[1] | Population | ||||
|---|---|---|---|---|---|---|
| 2025 estimate[3] | Change | 2020 Census[4] | Change | 2010 Census[5] | ||
| 1 | Des Moines–West Des Moines–Ames, IA CSA | 942,701 | +5.88% | 890,322 | +14.44% | 778,013 |
| 2 | Cedar Rapids–Iowa City, IA CSA | 461,996 | +2.23% | 451,939 | +10.09% | 410,526 |
| 3 | Davenport–Moline, IA-IL CSA (IA) | 263,114 | −0.47% | 264,364 | +2.83% | 257,085 |
| 4 | Sioux City–Le Mars, IA-NE-SD CSA (IA) | 132,346 | +0.54% | 131,639 | +3.52% | 127,158 |
| 5 | Omaha–Fremont, NE-IA CSA (IA) | 122,412 | −0.26% | 122,733 | −0.33% | 123,145 |
| 6 | Burlington–Fort Madison, IA-IL CSA (IA) | 70,383 | −2.87% | 72,465 | −4.89% | 76,187 |
| 7 | Spencer–Spirit Lake, IA CSA | 34,279 | +0.56% | 34,087 | +2.26% | 33,334 |
| Burlington–Fort Madison, IA-IL CSA | 76,367 | −3.15% | 78,852 | −5.59% | 83,518 | |
| Davenport–Moline, IA-IL CSA | 468,307 | −1.21% | 474,019 | +0.74% | 470,527 | |
| Omaha–Fremont, NE-IA CSA | 1,047,893 | +4.29% | 1,004,771 | +11.39% | 902,041 | |
| Sioux City–Le Mars, IA-NE-SD CSA | 171,435 | +0.83% | 170,032 | +4.59% | 162,563 | |
See also
[edit]
Notes
[edit]- ↑ 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.
- ↑ 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.
- ↑ 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
[edit]- 1 2 3 4 5 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). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved October 23, 2023.
{{cite web}}: CS1 maint: multiple names: authors list (link) - 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.
- 1 2 3 4 5 "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2025". United States Census Bureau, Population Division. July 2025. Retrieved July 9, 2026.
- 1 2 "PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved May 21, 2024.
- 1 2 "Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved May 21, 2024.
External links
[edit]
Media from Commons
Quotations from Wikiquote
Travel information from Wikivoyage
