Demographics Table
Demographic Data Report for Iowa by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Rank
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age Under 18)
|
Rank within US (of 3143 counties) 
|
|---|---|---|---|---|
| Iowa | N/A | 23.0 | 736,579 | 16 of 52 |
| United States | N/A | 22.2 | 73,645,238 | N/A |
| Davis County | Rural | 29.9 | 2,730 | 79 |
| Lyon County | Rural | 28.6 | 3,451 | 117 |
| Sioux County | Rural | 27.4 | 9,874 | 173 |
| Dallas County | Urban | 26.8 | 27,939 | 209 |
| Buena Vista County | Rural | 26.7 | 5,521 | 215 |
| Wayne County | Rural | 26.3 | 1,714 | 251 |
| Wright County | Rural | 26.1 | 3,343 | 270 |
| Woodbury County | Urban | 25.9 | 27,420 | 299 |
| Buchanan County | Rural | 25.7 | 5,308 | 324 |
| Howard County | Rural | 25.6 | 2,419 | 338 |
| Clarke County | Rural | 25.5 | 2,474 | 355 |
| Crawford County | Rural | 25.3 | 4,121 | 398 |
| Marshall County | Rural | 25.3 | 10,127 | 398 |
| Madison County | Urban | 24.9 | 4,175 | 492 |
| Plymouth County | Rural | 24.9 | 6,411 | 492 |
| Polk County | Urban | 24.6 | 122,384 | 545 |
| Warren County | Urban | 24.6 | 13,172 | 545 |
| Washington County | Urban | 24.6 | 5,553 | 545 |
| Ida County | Rural | 24.5 | 1,698 | 572 |
| Franklin County | Rural | 24.4 | 2,439 | 594 |
| O'Brien County | Rural | 24.4 | 3,438 | 594 |
| Muscatine County | Rural | 24.2 | 10,344 | 647 |
| Allamakee County | Rural | 24.1 | 3,386 | 687 |
| Carroll County | Rural | 24.1 | 4,986 | 687 |
| Mitchell County | Rural | 24.0 | 2,534 | 718 |
| Tama County | Rural | 24.0 | 4,079 | 718 |
| Mahaska County | Rural | 23.9 | 5,262 | 750 |
| Humboldt County | Rural | 23.7 | 2,266 | 823 |
| Union County | Rural | 23.7 | 2,858 | 823 |
| Wapello County | Rural | 23.7 | 8,349 | 823 |
| Cass County | Rural | 23.6 | 3,090 | 866 |
| Grundy County | Urban | 23.6 | 2,917 | 866 |
| Iowa County | Rural | 23.5 | 3,888 | 900 |
| Osceola County | Rural | 23.5 | 1,436 | 900 |
| Taylor County | Rural | 23.5 | 1,386 | 900 |
| Delaware County | Rural | 23.4 | 4,115 | 947 |
| Hamilton County | Rural | 23.4 | 3,486 | 947 |
| Marion County | Rural | 23.4 | 7,845 | 947 |
| Palo Alto County | Rural | 23.4 | 2,087 | 947 |
| Scott County | Urban | 23.4 | 40,786 | 947 |
| Chickasaw County | Rural | 23.3 | 2,769 | 1,001 |
| Pottawattamie County | Urban | 23.2 | 21,645 | 1,042 |
| Ringgold County | Rural | 23.2 | 1,081 | 1,042 |
| Van Buren County | Rural | 23.2 | 1,681 | 1,042 |
| Benton County | Urban | 23.1 | 5,941 | 1,087 |
| Clay County | Rural | 23.1 | 3,803 | 1,087 |
| Harrison County | Urban | 23.1 | 3,377 | 1,087 |
| Mills County | Urban | 23.1 | 3,362 | 1,087 |
| Monroe County | Rural | 23.1 | 1,745 | 1,087 |
| Adair County | Rural | 23.0 | 1,715 | 1,127 |
| Lucas County | Rural | 23.0 | 1,998 | 1,127 |
| Pocahontas County | Rural | 23.0 | 1,622 | 1,127 |
| Linn County | Urban | 22.8 | 52,233 | 1,209 |
| Shelby County | Rural | 22.8 | 2,686 | 1,209 |
| Clinton County | Rural | 22.7 | 10,532 | 1,250 |
| Dubuque County | Urban | 22.7 | 22,431 | 1,250 |
| Keokuk County | Rural | 22.7 | 2,262 | 1,250 |
| Bremer County | Urban | 22.6 | 5,677 | 1,288 |
| Decatur County | Rural | 22.6 | 1,730 | 1,288 |
| Floyd County | Rural | 22.6 | 3,508 | 1,288 |
| Montgomery County | Rural | 22.6 | 2,320 | 1,288 |
| Butler County | Rural | 22.5 | 3,215 | 1,340 |
| Louisa County | Rural | 22.4 | 2,402 | 1,385 |
| Monona County | Rural | 22.4 | 1,932 | 1,385 |
| Kossuth County | Rural | 22.3 | 3,251 | 1,429 |
| Sac County | Rural | 22.3 | 2,172 | 1,429 |
| Audubon County | Rural | 22.2 | 1,249 | 1,469 |
| Jackson County | Rural | 22.2 | 4,313 | 1,469 |
| Jasper County | Urban | 22.1 | 8,382 | 1,518 |
| Adams County | Rural | 21.9 | 796 | 1,606 |
| Black Hawk County | Urban | 21.9 | 28,679 | 1,606 |
| Des Moines County | Rural | 21.9 | 8,444 | 1,606 |
| Fremont County | Rural | 21.9 | 1,441 | 1,606 |
| Calhoun County | Rural | 21.8 | 2,152 | 1,646 |
| Cherokee County | Rural | 21.8 | 2,522 | 1,646 |
| Clayton County | Rural | 21.7 | 3,708 | 1,683 |
| Winnebago County | Rural | 21.7 | 2,315 | 1,683 |
| Cedar County | Rural | 21.5 | 3,953 | 1,784 |
| Appanoose County | Rural | 21.4 | 2,621 | 1,821 |
| Fayette County | Rural | 21.4 | 4,145 | 1,821 |
| Guthrie County | Urban | 21.4 | 2,279 | 1,821 |
| Webster County | Rural | 21.4 | 7,872 | 1,821 |
| Hancock County | Rural | 21.3 | 2,281 | 1,876 |
| Lee County | Rural | 21.3 | 7,075 | 1,876 |
| Greene County | Rural | 21.1 | 1,844 | 1,936 |
| Cerro Gordo County | Rural | 21.0 | 8,964 | 1,977 |
| Henry County | Rural | 21.0 | 4,254 | 1,977 |
| Boone County | Urban | 20.9 | 5,581 | 2,008 |
| Jones County | Urban | 20.9 | 4,344 | 2,008 |
| Worth County | Rural | 20.6 | 1,520 | 2,123 |
| Emmet County | Rural | 19.5 | 1,817 | 2,445 |
| Johnson County | Urban | 19.5 | 30,276 | 2,445 |
| Poweshiek County | Rural | 19.5 | 3,619 | 2,445 |
| Dickinson County | Rural | 19.2 | 3,433 | 2,514 |
| Hardin County | Rural | 19.2 | 3,217 | 2,514 |
| Page County | Rural | 19.2 | 2,908 | 2,514 |
| Winneshiek County | Rural | 19.0 | 3,790 | 2,557 |
| Jefferson County | Rural | 17.1 | 2,684 | 2,892 |
| Story County | Urban | 16.4 | 16,200 | 2,956 |
Notes:
Created by statecancerprofiles.cancer.gov on 04/24/2025 1:42 pm.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.
Created by statecancerprofiles.cancer.gov on 04/24/2025 1:42 pm.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.