RANKING · 2010 CENSUS · 500 SHOWN OF 3,131
Largest households, US counties · 2010
US counties ranked by average household size (2023 ACS). North Slope, Alaska leads at 4.47. 3,131 counties qualify in total. Texas carries 6 of the top 25 entries.
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RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2000
UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest average household size?
North Slope, Alaska ranks #1 with 4.47 (2010 American Community Survey).
What are the top 5 counties by average household size?
North Slope, Alaska, McKinley County, New Mexico, Sioux County, North Dakota, Bethel Census Area, Alaska, Northwest Arctic, Alaska.
How many counties are in this ranking?
3,131 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 ACS 5-year data.
How is average household size measured?
Average number of people per household. Source: US Census Bureau, American Community Survey 5-year estimates (2010).