Data / Rankings / Housing units / Counties in Iowa

Counties in Iowa by housing units, 2024

Polk County had the highest housing units of 99 counties in 2024, at 218,486. Adams County had the lowest, at 1,889. The median was 7,100 and the figure for Iowa was 1.44 million. Source: the U.S. Census Bureau.

Highest218,486Polk County
Lowest1,889Adams County
Median7,10099 counties
Iowa1,437,699History

Top 40 counties, 2024

Polk County: 218,486 countPolk County218,486Linn County: 103,104 countLinn County103,104Scott County: 78,537 countScott County78,537Johnson County: 68,217 countJohnson County68,217Black Hawk County: 58,991 countBlack Hawk County58,991Dallas County: 44,804 countDallas County44,804Woodbury County: 43,388 countWoodbury County43,388Dubuque County: 43,288 countDubuque County43,288Story County: 41,887 countStory County41,887Pottawattamie County: 40,083 countPottawattamie County40,083Cerro Gordo County: 22,786 countCerro Gordo County22,786Warren County: 21,921 countWarren County21,921Clinton County: 21,581 countClinton County21,581Des Moines County: 18,802 countDes Moines County18,802Muscatine County: 18,454 countMuscatine County18,454Webster County: 17,082 countWebster County17,082Marshall County: 16,937 countMarshall County16,937Jasper County: 16,249 countJasper County16,249Lee County: 15,794 countLee County15,794Wapello County: 15,730 countWapello County15,730Marion County: 14,386 countMarion County14,386Dickinson County: 14,206 countDickinson County14,206Sioux County: 13,285 countSioux County13,285Boone County: 12,041 countBoone County12,041Benton County: 11,114 countBenton County11,114Plymouth County: 10,891 countPlymouth County10,891Bremer County: 10,585 countBremer County10,585Mahaska County: 9,728 countMahaska County9,728Washington County: 9,657 countWashington County9,657Carroll County: 9,560 countCarroll County9,560Fayette County: 9,320 countFayette County9,320Jackson County: 9,282 countJackson County9,282Winneshiek County: 9,029 countWinneshiek County9,029Poweshiek County: 8,975 countPoweshiek County8,975Buchanan County: 8,945 countBuchanan County8,945Jones County: 8,889 countJones County8,889Clayton County: 8,796 countClayton County8,796Henry County: 8,445 countHenry County8,445Cedar County: 8,300 countCedar County8,300Buena Vista County: 8,293 countBuena Vista County8,293
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2024
count		Change on 2023
1Polk County218,486+1.6%
2Linn County103,104+1.1%
3Scott County78,537+0.5%
4Johnson County68,217+1.5%
5Black Hawk County58,991+0.4%
6Dallas County44,804+3.7%
7Woodbury County43,388+0.6%
8Dubuque County43,288+0.7%
9Story County41,887+0.6%
10Pottawattamie County40,083+0.2%
11Cerro Gordo County22,786+0.2%
12Warren County21,921+2.1%
13Clinton County21,581-0%
14Des Moines County18,802+0.1%
15Muscatine County18,454+0.1%
16Webster County17,082+0.2%
17Marshall County16,937+0.5%
18Jasper County16,249+0.3%
19Lee County15,794-0.1%
20Wapello County15,730-0.1%
21Marion County14,386+0.8%
22Dickinson County14,206+1%
23Sioux County13,285+0.8%
24Boone County12,041+0.3%
25Benton County11,114+0.2%
26Plymouth County10,891+0.3%
27Bremer County10,585+0.4%
28Mahaska County9,728+0.2%
29Washington County9,657+0.2%
30Carroll County9,560+0.5%
31Fayette County9,320-0%
32Jackson County9,282+0.1%
33Winneshiek County9,029+0.2%
34Poweshiek County8,975+0.3%
35Buchanan County8,945-0%
36Jones County8,889+0.1%
37Clayton County8,796+0.1%
38Henry County8,4450%
39Cedar County8,300+0.8%
40Buena Vista County8,293+0.6%
41Delaware County8,169+0.3%
42Clay County8,157+0.2%
43Hardin County8,011-0.2%
44Allamakee County7,761+0.4%
45Jefferson County7,706-0%
46Tama County7,5950%
47Iowa County7,369+0.2%
48Floyd County7,306-0%
49Kossuth County7,205-0.2%
50Madison County7,100+1%
51Hamilton County7,040-0.2%
52Page County7,004+0.1%
53Crawford County6,869+0.2%
54Harrison County6,698+0.3%
55Butler County6,5700%
56O'Brien County6,564+0.3%
57Cass County6,393-0.1%
58Appanoose County6,312-0%
59Wright County6,278+0.2%
60Mills County6,134+0.2%
61Guthrie County5,808+0.4%
62Union County5,785-0.1%
63Cherokee County5,5570%
64Chickasaw County5,542-0.1%
65Grundy County5,498+0.2%
66Shelby County5,441+0.2%
67Sac County5,118-0.1%
68Hancock County5,116-0.1%
69Winnebago County5,077-0.1%
70Montgomery County5,005-0.1%
71Mitchell County4,950+1%
72Lyon County4,870+0.3%
73Calhoun County4,798+0.1%
74Louisa County4,739+0.1%
75Franklin County4,6570%
76Keokuk County4,647-0.1%
77Humboldt County4,603+0.1%
78Palo Alto County4,535+0.4%
79Clarke County4,522+2.7%
80Emmet County4,520+0.1%
81Monona County4,372-0.4%
82Howard County4,320+0.1%
83Greene County4,319+0.1%
84Lucas County4,074-0.1%
85Decatur County3,659+0.2%
86Monroe County3,656+0.2%
87Pocahontas County3,651-0.2%
88Davis County3,612+0.3%
89Adair County3,568-0.8%
90Van Buren County3,490-0.5%
91Worth County3,474-0.4%
92Ida County3,369+0.1%
93Fremont County3,125-0.2%
94Wayne County3,019-0.1%
95Taylor County2,889-0%
96Osceola County2,8680%
97Audubon County2,790+0.1%
98Ringgold County2,678+0.1%
99Adams County1,889-0.2%

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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in Iowa by housing units, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/iowa-counties. 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, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/iowa-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Iowa by housing units, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/iowa-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25001: total housing units: Counties in Iowa by housing units, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/iowa-counties. 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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/iowa-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/iowa-counties.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing units?

Polk County, with 218,486 in 2024, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Adams County, with 1,889 in 2024.

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