Data / Rankings / Housing units / Counties in Iowa

Counties in Iowa by housing units

Polk County had the highest housing units of 99 counties in 2022, at 211,392. Adams County had the lowest, at 1,893. The median was 7,042 and the figure for Iowa was 1.42 million. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest211,392Polk County
Lowest1,893Adams County
Median7,04299 counties
Iowa1,417,064History

Map of counties, 2022

Adair County: 3,606 countAdams County: 1,893 countAllamakee County: 7,696 countAppanoose County: 6,321 countAudubon County: 2,805 countBenton County: 11,074 countBlack Hawk County: 58,599 countBoone County: 11,950 countBremer County: 10,493 countBuchanan County: 8,911 countBuena Vista County: 8,197 countButler County: 6,545 countCalhoun County: 4,794 countCarroll County: 9,515 countCass County: 6,403 countCedar County: 8,213 countCerro Gordo County: 22,651 countCherokee County: 5,553 countChickasaw County: 5,540 countClarke County: 4,321 countClay County: 8,098 countClayton County: 8,779 countClinton County: 21,575 countCrawford County: 6,860 countDallas County: 41,753 countDavis County: 3,588 countDecatur County: 3,662 countDelaware County: 8,107 countDes Moines County: 18,791 countDickinson County: 13,841 countDubuque County: 42,707 countEmmet County: 4,513 countFayette County: 9,323 countFloyd County: 7,337 countFranklin County: 4,668 countFremont County: 3,144 countGreene County: 4,325 countGrundy County: 5,457 countGuthrie County: 5,783 countHamilton County: 7,042 countHancock County: 5,127 countHardin County: 8,031 countHarrison County: 6,684 countHenry County: 8,412 countHoward County: 4,307 countHumboldt County: 4,571 countIda County: 3,365 countIowa County: 7,342 countJackson County: 9,260 countJasper County: 16,183 countJefferson County: 7,685 countJohnson County: 66,163 countJones County: 8,893 countKeokuk County: 4,668 countKossuth County: 7,227 countLee County: 15,869 countLinn County: 101,214 countLouisa County: 4,743 countLucas County: 4,080 countLyon County: 4,853 countMadison County: 6,953 countMahaska County: 9,700 countMarion County: 14,179 countMarshall County: 16,795 countMills County: 6,121 countMitchell County: 4,885 countMonona County: 4,403 countMonroe County: 3,660 countMontgomery County: 5,030 countMuscatine County: 18,386 countO'Brien County: 6,546 countOsceola County: 2,885 countPage County: 6,997 countPalo Alto County: 4,509 countPlymouth County: 10,819 countPocahontas County: 3,663 countPolk County: 211,392 countPottawattamie County: 39,914 countPoweshiek County: 8,942 countRinggold County: 2,673 countSac County: 5,143 countScott County: 77,613 countShelby County: 5,422 countSioux County: 13,046 countStory County: 41,347 countTama County: 7,589 countTaylor County: 2,908 countUnion County: 5,791 countVan Buren County: 3,509 countWapello County: 15,754 countWarren County: 21,083 countWashington County: 9,606 countWayne County: 3,032 countWebster County: 16,981 countWinnebago County: 5,089 countWinneshiek County: 8,958 countWoodbury County: 42,864 countWorth County: 3,486 countWright County: 6,281 count
  • Under 4,000
  • 4,000 to 5,000
  • 5,000 to 7,000
  • 7,000 to 9,000
  • 9,000 to 17K
  • 17K and over
count, 2022. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Polk County: 211,392 countPolk County211,392Linn County: 101,214 countLinn County101,214Scott County: 77,613 countScott County77,613Johnson County: 66,163 countJohnson County66,163Black Hawk County: 58,599 countBlack Hawk County58,599Woodbury County: 42,864 countWoodbury County42,864Dubuque County: 42,707 countDubuque County42,707Dallas County: 41,753 countDallas County41,753Story County: 41,347 countStory County41,347Pottawattamie County: 39,914 countPottawattamie County39,914Cerro Gordo County: 22,651 countCerro Gordo County22,651Clinton County: 21,575 countClinton County21,575Warren County: 21,083 countWarren County21,083Des Moines County: 18,791 countDes Moines County18,791Muscatine County: 18,386 countMuscatine County18,386Webster County: 16,981 countWebster County16,981Marshall County: 16,795 countMarshall County16,795Jasper County: 16,183 countJasper County16,183Lee County: 15,869 countLee County15,869Wapello County: 15,754 countWapello County15,754Marion County: 14,179 countMarion County14,179Dickinson County: 13,841 countDickinson County13,841Sioux County: 13,046 countSioux County13,046Boone County: 11,950 countBoone County11,950Benton County: 11,074 countBenton County11,074Plymouth County: 10,819 countPlymouth County10,819Bremer County: 10,493 countBremer County10,493Mahaska County: 9,700 countMahaska County9,700Washington County: 9,606 countWashington County9,606Carroll County: 9,515 countCarroll County9,515Fayette County: 9,323 countFayette County9,323Jackson County: 9,260 countJackson County9,260Winneshiek County: 8,958 countWinneshiek County8,958Poweshiek County: 8,942 countPoweshiek County8,942Buchanan County: 8,911 countBuchanan County8,911Jones County: 8,893 countJones County8,893Clayton County: 8,779 countClayton County8,779Henry County: 8,412 countHenry County8,412Cedar County: 8,213 countCedar County8,213Buena Vista County: 8,197 countBuena Vista County8,197Polk County: 211,392 countPolk County211,392Linn County: 101,214 countLinn County101,214Scott County: 77,613 countScott County77,613Johnson County: 66,163 countJohnson County66,163Black Hawk County: 58,599 countBlack Hawk County58,599Woodbury County: 42,864 countWoodbury County42,864Dubuque County: 42,707 countDubuque County42,707Dallas County: 41,753 countDallas County41,753Story County: 41,347 countStory County41,347Pottawattamie County: 39,914 countPottawattamie County39,914Cerro Gordo County: 22,651 countCerro Gordo County22,651Clinton County: 21,575 countClinton County21,575Warren County: 21,083 countWarren County21,083Des Moines County: 18,791 countDes Moines County18,791Muscatine County: 18,386 countMuscatine County18,386Webster County: 16,981 countWebster County16,981Marshall County: 16,795 countMarshall County16,795Jasper County: 16,183 countJasper County16,183Lee County: 15,869 countLee County15,869Wapello County: 15,754 countWapello County15,754Marion County: 14,179 countMarion County14,179Dickinson County: 13,841 countDickinson County13,841Sioux County: 13,046 countSioux County13,046Boone County: 11,950 countBoone County11,950Benton County: 11,074 countBenton County11,074Plymouth County: 10,819 countPlymouth County10,819Bremer County: 10,493 countBremer County10,493Mahaska County: 9,700 countMahaska County9,700Washington County: 9,606 countWashington County9,606Carroll County: 9,515 countCarroll County9,515Fayette County: 9,323 countFayette County9,323Jackson County: 9,260 countJackson County9,260Winneshiek County: 8,958 countWinneshiek County8,958Poweshiek County: 8,942 countPoweshiek County8,942Buchanan County: 8,911 countBuchanan County8,911Jones County: 8,893 countJones County8,893Clayton County: 8,779 countClayton County8,779Henry County: 8,412 countHenry County8,412Cedar County: 8,213 countCedar County8,213Buena Vista County: 8,197 countBuena Vista County8,197
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2022
count		Change on 2021
1Polk County211,392+1.8%
2Linn County101,214+0.8%
3Scott County77,613+0.7%
4Johnson County66,163+1.6%
5Black Hawk County58,599+0.4%
6Woodbury County42,864+0.5%
7Dubuque County42,707+0.7%
8Dallas County41,753+3.6%
9Story County41,347+1.2%
10Pottawattamie County39,914+0.2%
11Cerro Gordo County22,651+0.3%
12Clinton County21,575+0.3%
13Warren County21,083+2%
14Des Moines County18,791+0.1%
15Muscatine County18,386+0.4%
16Webster County16,981+0.2%
17Marshall County16,795+0.3%
18Jasper County16,183+0.5%
19Lee County15,869-0.3%
20Wapello County15,754-0.2%
21Marion County14,179+0.8%
22Dickinson County13,841+1.4%
23Sioux County13,046+0.7%
24Boone County11,950+0.3%
25Benton County11,0740%
26Plymouth County10,819+0.4%
27Bremer County10,493+0.6%
28Mahaska County9,700-0%
29Washington County9,6060%
30Carroll County9,515+0.2%
31Fayette County9,323-0.3%
32Jackson County9,260-0.1%
33Winneshiek County8,958+0.4%
34Poweshiek County8,942+0.3%
35Buchanan County8,911+0.2%
36Jones County8,893+0.1%
37Clayton County8,779-0.2%
38Henry County8,412+0.2%
39Cedar County8,213+0.5%
40Buena Vista County8,197+0.3%
41Delaware County8,107+0.3%
42Clay County8,098-0%
43Hardin County8,031-0.6%
44Allamakee County7,696+0.4%
45Jefferson County7,685+0.5%
46Tama County7,589-0.3%
47Iowa County7,342-0.1%
48Floyd County7,337-0.1%
49Kossuth County7,227-0.5%
50Hamilton County7,042+0.1%
51Page County6,997-0.3%
52Madison County6,953+1%
53Crawford County6,860-0.3%
54Harrison County6,684+0.1%
55O'Brien County6,546+0.2%
56Butler County6,545-0%
57Cass County6,403-0.1%
58Appanoose County6,321-0.3%
59Wright County6,281-0.3%
60Mills County6,121-0.1%
61Union County5,791-0.3%
62Guthrie County5,783+0.1%
63Cherokee County5,553-0.5%
64Chickasaw County5,540-0.5%
65Grundy County5,457-0.3%
66Shelby County5,422-0%
67Sac County5,143-0.4%
68Hancock County5,127-0.2%
69Winnebago County5,089-0.1%
70Montgomery County5,030-0.1%
71Mitchell County4,885+0.8%
72Lyon County4,853+0.1%
73Calhoun County4,794-0.5%
74Louisa County4,743-0.1%
75Franklin County4,668-0.3%
75Keokuk County4,668-0.3%
77Humboldt County4,571-0.5%
78Emmet County4,513-0.2%
79Palo Alto County4,509-0.1%
80Monona County4,403-0.5%
81Greene County4,325-0.2%
82Clarke County4,321+2.1%
83Howard County4,307-0.4%
84Lucas County4,0800%
85Pocahontas County3,663-0.4%
86Decatur County3,662-0.8%
87Monroe County3,660-0.4%
88Adair County3,606+0.4%
89Davis County3,588+0.1%
90Van Buren County3,509-0%
91Worth County3,486+0.1%
92Ida County3,365+0.1%
93Fremont County3,144-0.5%
94Wayne County3,032-0.4%
95Taylor County2,908-0.3%
96Osceola County2,885-0.5%
97Audubon County2,805-0.5%
98Ringgold County2,673+0.1%
99Adams County1,893-0.1%

Other periods

About this ranking

All housing units, occupied and vacant: houses, apartments, mobile homes and rooms intended as separate living quarters. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A survey estimate averaged over five years, not a count on one date.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25001: total housing units (Counties in Iowa by housing units, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in Iowa by housing units, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/iowa-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units. Counties in Iowa by housing units, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/iowa-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Iowa by housing units, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/iowa-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units: Counties in Iowa by housing units, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/iowa-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25001: total housing units: Counties in Iowa by housing units, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/iowa-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/iowa-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing units?

Polk County, with 211,392 in 2022, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Adams County, with 1,893 in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Housing units: other rankings

Counties in Iowa: more rankings