# Counties in Iowa by housing units authorized by building permits, 2025

All 99 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `building_permit_units`
- Unit: count
- Definition: Annual number of new privately owned housing units authorized by building permits, from the US Census Bureau Building Permits Survey.
- Source: U.S. Census Bureau, Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation (https://www2.census.gov/econ/bps/County/co2025a.txt)
- Retrieved: 2026-10-10
- Citation: U.S. Census Bureau. Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. https://www2.census.gov/econ/bps/County/co2025a.txt. Retrieved 2026-10-10.
- Web page: https://invokely.ai/rankings/building-permit-housing-units/iowa-counties
- CSV: https://invokely.ai/download/rankings/building-permit-housing-units/iowa-counties.csv

| Rank | Place | count |
|---:|---|---:|
| 1 | Polk County | 4,730 |
| 2 | Johnson County | 1,241 |
| 3 | Linn County | 941 |
| 4 | Dallas County | 875 |
| 5 | Black Hawk County | 488 |
| 6 | Warren County | 465 |
| 7 | Scott County | 372 |
| 8 | Sioux County | 359 |
| 9 | Marion County | 339 |
| 10 | Dubuque County | 334 |
| 10 | Pottawattamie County | 334 |
| 12 | Woodbury County | 238 |
| 13 | Boone County | 207 |
| 14 | Story County | 185 |
| 15 | Clarke County | 138 |
| 16 | Muscatine County | 119 |
| 17 | Dickinson County | 117 |
| 18 | Cerro Gordo County | 116 |
| 19 | Allamakee County | 98 |
| 20 | Clinton County | 85 |
| 21 | Des Moines County | 81 |
| 22 | Jasper County | 80 |
| 22 | Lee County | 80 |
| 24 | Floyd County | 77 |
| 25 | Cedar County | 67 |
| 26 | Madison County | 66 |
| 26 | Mahaska County | 66 |
| 28 | Buchanan County | 62 |
| 29 | Clay County | 61 |
| 30 | Cherokee County | 56 |
| 31 | Clayton County | 55 |
| 32 | Bremer County | 46 |
| 33 | Plymouth County | 45 |
| 34 | Poweshiek County | 44 |
| 35 | Wapello County | 42 |
| 36 | Lyon County | 41 |
| 37 | Mitchell County | 37 |
| 38 | Carroll County | 36 |
| 39 | Winneshiek County | 35 |
| 40 | Delaware County | 33 |
| 40 | Guthrie County | 33 |
| 40 | Marshall County | 33 |
| 43 | Henry County | 32 |
| 43 | Jackson County | 32 |
| 45 | Fayette County | 30 |
| 46 | Montgomery County | 29 |
| 47 | Benton County | 28 |
| 48 | Mills County | 25 |
| 48 | Washington County | 25 |
| 50 | Adair County | 23 |
| 50 | Union County | 23 |
| 50 | Webster County | 23 |
| 53 | Louisa County | 21 |
| 54 | Grundy County | 20 |
| 54 | Harrison County | 20 |
| 56 | Crawford County | 19 |
| 56 | Wright County | 19 |
| 58 | Butler County | 18 |
| 58 | Hardin County | 18 |
| 58 | Jones County | 18 |
| 58 | O'Brien County | 18 |
| 62 | Buena Vista County | 16 |
| 63 | Fremont County | 15 |
| 64 | Emmet County | 14 |
| 64 | Humboldt County | 14 |
| 64 | Sac County | 14 |
| 67 | Calhoun County | 13 |
| 68 | Adams County | 12 |
| 68 | Hamilton County | 12 |
| 68 | Monroe County | 12 |
| 68 | Page County | 12 |
| 72 | Appanoose County | 11 |
| 72 | Cass County | 11 |
| 74 | Iowa County | 9 |
| 75 | Chickasaw County | 8 |
| 76 | Audubon County | 7 |
| 76 | Hancock County | 7 |
| 76 | Monona County | 7 |
| 79 | Greene County | 6 |
| 79 | Howard County | 6 |
| 79 | Palo Alto County | 6 |
| 79 | Ringgold County | 6 |
| 83 | Tama County | 5 |
| 83 | Van Buren County | 5 |
| 83 | Worth County | 5 |
| 86 | Kossuth County | 4 |
| 86 | Taylor County | 4 |
| 86 | Winnebago County | 4 |
| 89 | Franklin County | 3 |
| 89 | Osceola County | 3 |
| 89 | Shelby County | 3 |
| 89 | Wayne County | 3 |
| 93 | Ida County | 2 |
| 93 | Jefferson County | 2 |
| 93 | Lucas County | 2 |
| 96 | Davis County | 1 |
| 96 | Decatur County | 1 |
| 96 | Keokuk County | 1 |
| 99 | Pocahontas County | 0 |