U.S. State and County Directories
Browse published state county maps, search county lists, and explore detailed county profiles. State hubs connect official geographic identifiers with interactive U.S. Census Bureau boundary maps.
Texas
Full county directory with searchable Census-based reference data and detailed profiles for selected Texas counties.
Explore Texas counties →California
Browse every California county and explore profiles for Los Angeles, San Diego, Orange, and San Francisco.
Explore California counties →Florida
Browse all Florida counties and detailed profiles for nine major counties.
Explore Florida counties →Alabama
Explore all Alabama counties from the Tennessee Valley to the Gulf Coast, with FIPS codes and a geographic map.
Explore Alabama counties →Michigan
Search Michigan county names and FIPS codes, with a Census boundary map covering both peninsulas.
Explore Michigan counties →North Carolina
Explore counties from the mountains through the Piedmont to the coast, including a searchable FIPS directory.
Explore North Carolina counties →Missouri
See all 114 Missouri counties and the independent City of St. Louis, with FIPS numbers and an interactive map.
Explore Missouri counties →How to use these directories
Select a state to open its searchable county list and map. Use the county FIPS code to identify a county consistently across government datasets. For a county where we have built a detailed profile, follow the profile link to see its county seat, a boundary map, and source-labeled Census statistics.
We are expanding state coverage. Only states with a published directory are linked above, so you will not encounter empty pages for other states.
Need to find a county from an address or ZIP code?
If you do not already know the county name, use the address-to-county finder. ZIP codes do not map one-to-one to counties; see the ZIP Code to County tool for information about ZIP Code Tabulation Areas.
For government identifiers, try our FIPS lookup. To understand boundary vintages and Census-based estimates, read Data & Methodology.