Local research workflow planning
Find a county. Start with the facts.
3,144 counties and county equivalents across the 50 states and D.C., plus 78 Puerto Rico municipios. Search names or FIPS codes, compare Census geography and keep the original sources with your work.
- Alabama
67 counties and equivalents
- Alaska
30 counties and equivalents
- Arizona
15 counties and equivalents
- Arkansas
75 counties and equivalents
- California
58 counties and equivalents
- Colorado
64 counties and equivalents
- Connecticut
9 counties and equivalents
- Delaware
3 counties and equivalents
- District of Columbia
1 counties and equivalents
- Florida
67 counties and equivalents
- Georgia
159 counties and equivalents
- Hawaii
5 counties and equivalents
- Idaho
44 counties and equivalents
- Illinois
102 counties and equivalents
- Indiana
92 counties and equivalents
- Iowa
99 counties and equivalents
- Kansas
105 counties and equivalents
- Kentucky
120 counties and equivalents
- Louisiana
64 counties and equivalents
- Maine
16 counties and equivalents
- Maryland
24 counties and equivalents
- Massachusetts
14 counties and equivalents
- Michigan
83 counties and equivalents
- Minnesota
87 counties and equivalents
- Mississippi
82 counties and equivalents
- Missouri
115 counties and equivalents
- Montana
56 counties and equivalents
- Nebraska
93 counties and equivalents
- Nevada
17 counties and equivalents
- New Hampshire
10 counties and equivalents
- New Jersey
21 counties and equivalents
- New Mexico
33 counties and equivalents
- New York
62 counties and equivalents
- North Carolina
100 counties and equivalents
- North Dakota
53 counties and equivalents
- Ohio
88 counties and equivalents
- Oklahoma
77 counties and equivalents
- Oregon
36 counties and equivalents
- Pennsylvania
67 counties and equivalents
- Puerto Rico
78 counties and equivalents
- Rhode Island
5 counties and equivalents
- South Carolina
46 counties and equivalents
- South Dakota
66 counties and equivalents
- Tennessee
95 counties and equivalents
- Texas
254 counties and equivalents
- Utah
29 counties and equivalents
- Vermont
14 counties and equivalents
- Virginia
133 counties and equivalents
- Washington
39 counties and equivalents
- West Virginia
55 counties and equivalents
- Wisconsin
72 counties and equivalents
- Wyoming
23 counties and equivalents
Use the county data
Use county codes to define the geographic boundaries of an agent research task. The sponsor should specify the sources, permitted actions and required review before a recurring task is commissioned.
A county page is not a commissioned agent deployment or a promise of local field service.
Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.