Counties
Click a county to open its demographics page.
Largest counties
- 1 Los Angeles County, CA 10,010,304
- 2 Cook County, IL 5,273,615
- 3 Harris County, TX 4,731,130
- 4 Maricopa County, AZ 4,420,573
- 5 San Diego County, CA 3,298,016
- 6 Orange County, CA 3,186,444
- 7 Kings County, NY 2,736,074
- 8 Miami-Dade County, FL 2,701,051
- 9 Dallas County, TX 2,613,539
- 10 Riverside County, CA 2,418,185
- 11 Queens County, NY 2,405,458
- 12 King County, WA 2,269,568
- 13 Clark County, NV 2,265,461
- 14 San Bernardino County, CA 2,181,654
- 15 Tarrant County, TX 2,110,640
3,235 counties total.
Click any county on the map to open its page.
About counties
This view shows the 3,000+ counties and county equivalents the census reports — parishes in Louisiana, boroughs in Alaska, independent cities in Virginia, and Connecticut's planning regions. Each county's page compares its demographics against national averages and lists its census tracts.
Counties are the primary legal subdivision of a state and the building block of metro areas. The census counts 3,000+ counties and county equivalents (parishes in Louisiana, boroughs in Alaska, independent cities in Virginia; Connecticut reports planning regions).