The least populous counties in the United States

What this list shows

• 3,144 of the 3,144 US counties and county-equivalents have a published figure for population.
• Texas accounts for 23 of the top 100, ahead of Nebraska with 20 and Montana with 11.
• The top 100 is not made up only of counties. It includes 1 city and borough, 3 boroughs, and 1 municipality. County-equivalents are ranked alongside counties here, and the type column says which is which.

The top 100

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

This is the top 100. See the complete table of all 3,144 counties.

Other rankings

• The most populous counties in the United States
• The largest counties in the United States by land area
• The smallest counties in the United States by land area
• The most densely populated counties in the United States
• The least densely populated counties in the United States
• The fastest growing counties in the United States
• The fastest shrinking counties in the United States
• The highest median household income counties in the United States
• The lowest median household income counties in the United States
• The highest median home value counties in the United States
• The oldest counties in the United States by median age