Explore county populations across the United States.
Ever wonder how many people live in America’s most populous counties? Explore the map above, change the population threshold, or select a state to see how its counties compare.
About half of the U.S. population lives in counties with more than 500,000 residents, but that is just 150 of the country’s 3,144 counties, or fewer than 5%. Explore this tool or our other county data visualizations to learn more about the United States.
This data comes from the U.S. Census Bureau’s 2025 Population Estimate Program. The visualization was created in Tableau.
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