Iowa Male and Female Gender Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the Iowa population consisted of 1.59M males and 1.59M females.
Male Population: Polk had the highest male population (242.30K), followed by Linn (113.12K), and Scott (85.93K).
Female Population: Polk had the highest female population (246.57K), followed by Linn (115.45K), and Scott (88.25K).
The charts and table below shows the male and female population for each county.
You can see similar information for other states and by state for the United States.
Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Iowa Male Population By County in 2021
Iowa Female Population By County in 2021
Iowa Male and Female Population By County in 2021
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| County | Male Population | Female Population |
|---|---|---|
| Adair | 3762 | 3677 |
| Adams | 1833 | 1864 |
| Allamakee | 7148 | 6920 |
| Appanoose | 6076 | 6234 |
| Audubon | 2832 | 2825 |
| Benton | 12917 | 12737 |
| Black Hawk | 64875 | 66521 |
| Boone | 13617 | 13104 |
| Bremer | 12466 | 12397 |
| Buchanan | 10230 | 10368 |
| Buena Vista | 10923 | 9800 |
| Butler | 7172 | 7249 |
| Calhoun | 5219 | 4743 |
| Carroll | 10399 | 10357 |
| Cass | 6625 | 6533 |
| Cedar | 9163 | 9331 |
| Cerro Gordo | 21340 | 21845 |
| Cherokee | 5869 | 5737 |
| Chickasaw | 6079 | 5942 |
| Clarke | 5094 | 4642 |
| Clay | 8074 | 8336 |
| Clayton | 8675 | 8498 |
| Clinton | 22998 | 23591 |
| Crawford | 8208 | 8347 |
| Dallas | 47916 | 48688 |
| Davis | 4579 | 4487 |
| Decatur | 3914 | 3804 |
| Delaware | 8914 | 8594 |
| Des Moines | 19055 | 20014 |
| Dickinson | 8781 | 8755 |
| Dubuque | 48563 | 50124 |
| Emmet | 4696 | 4737 |
| Fayette | 9839 | 9743 |
| Floyd | 7827 | 7845 |
| Franklin | 5101 | 4955 |
| Fremont | 3389 | 3313 |
| Greene | 4375 | 4456 |
| Grundy | 6121 | 6215 |
| Guthrie | 5310 | 5289 |
| Hamilton | 7588 | 7485 |
| Hancock | 5488 | 5349 |
| Hardin | 8573 | 8424 |
| Harrison | 7374 | 7215 |
| Henry | 10631 | 9857 |
| Howard | 4771 | 4685 |
| Humboldt | 4867 | 4755 |
| Ida | 3508 | 3471 |
| Iowa | 8402 | 8194 |
| Jackson | 9843 | 9656 |
| Jasper | 19528 | 18158 |
| Jefferson | 8116 | 7730 |
| Johnson | 75737 | 76096 |
| Jones | 10675 | 10005 |
| Keokuk | 5127 | 4923 |
| Kossuth | 7458 | 7365 |
| Lee | 17034 | 16690 |
| Linn | 113120 | 115447 |
| Louisa | 5629 | 5262 |
| Lucas | 4430 | 4220 |
| Lyon | 6109 | 5844 |
| Madison | 8247 | 8167 |
| Mahaska | 11251 | 10881 |
| Marion | 16832 | 16549 |
| Marshall | 20159 | 19978 |
| Mills | 7330 | 7328 |
| Mitchell | 5270 | 5256 |
| Monona | 4213 | 4519 |
| Monroe | 3673 | 3916 |
| Montgomery | 5004 | 5323 |
| Muscatine | 21666 | 21479 |
| O'Brien | 7106 | 7033 |
| Osceola | 3160 | 3008 |
| Page | 8189 | 7061 |
| Palo Alto | 4573 | 4423 |
| Plymouth | 12852 | 12691 |
| Pocahontas | 3533 | 3558 |
| Polk | 242298 | 246573 |
| Pottawattamie | 46495 | 47076 |
| Poweshiek | 9056 | 9572 |
| Ringgold | 2336 | 2403 |
| Sac | 4925 | 4904 |
| Scott | 85925 | 88245 |
| Shelby | 5704 | 6046 |
| Sioux | 18012 | 17635 |
| Story | 51369 | 46737 |
| Tama | 8560 | 8519 |
| Taylor | 2921 | 3011 |
| Union | 5987 | 6206 |
| Van Buren | 3693 | 3503 |
| Wapello | 17766 | 17577 |
| Warren | 25737 | 26125 |
| Washington | 11140 | 11385 |
| Wayne | 3228 | 3276 |
| Webster | 19353 | 17761 |
| Winnebago | 5402 | 5341 |
| Winneshiek | 10055 | 10045 |
| Woodbury | 52483 | 52619 |
| Worth | 3868 | 3582 |
| Wright | 6648 | 6330 |