US counties by households
Los Angeles County had the highest households of 3135 counties in 2021, at 3.34 million. Kalawao County had the lowest, at 31. The median was 9,771 and the figure for the United States was 124.01 million. Source: the U.S. Census Bureau.
Map of counties, 2021
Top 40 counties, 2021
Full ranking
Other periods
About this ranking
Number of households, which equals the number of occupied housing units. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
People living in group quarters, such as college dormitories, nursing homes and prisons, are not in households.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. 9 counties with data in other periods have no value for 2021 and are left out rather than filled from another source. Equal values share a rank.
How to cite
U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25003: occupied housing units (households) (US counties by households, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat
MLA 9
American Community Survey 5-year estimates, table B25003: occupied housing units (households), US counties by households, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Invokely, https://invokely.ai/rankings/households/us-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25003: occupied housing units (households). US counties by households, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/us-counties?period=2021.
Harvard
U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), US counties by households, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat, via Invokely: https://invokely.ai/rankings/households/us-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_us_counties_by_households_2021,
author = {{U.S. Census Bureau}},
title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): US counties by households, 2021}},
year = {2026},
howpublished = {Data set},
url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/households/us-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - American Community Survey 5-year estimates, table B25003: occupied housing units (households): US counties by households, 2021
PY - 2026
DA - 2026/01/29
PB - U.S. Census Bureau
DB - Invokely
UR - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat
L2 - https://invokely.ai/rankings/households/us-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/households/us-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank US counties by households using official data, and cite the source.
rank_places {"indicator":"households","level":"province","within":"United States","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=households&level=province&within=United%20States&limit=10Questions
Which county has the highest households?
Los Angeles County, with 3.34 million in 2021, according to the U.S. Census Bureau.
Which county has the lowest households?
Kalawao County, with 31 in 2021.
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 B25003: occupied housing units (households). Retrieved 2026-10-12. 9 counties have no value for 2021 and are not ranked.
Households: other rankings
- Counties in Florida
- Counties in West Virginia
- Counties in Connecticut
- Cities in Connecticut
- Cities in Washington
- Cities in Colorado