COUNTY · AL
St. Clair County, Alabama
St. Clair County is a county in Alabama with FIPS code 01115 and an estimated population of 95,552 (Census 2023), 16th largest of 67 in the state.
County facts
- Name
- St. Clair County
- State
- Alabama
- Type
- county
- FIPS code
- 01115
- State FIPS
- 01
- Population (2023)
- 95,552
- Change since 2020
- +4.2%
- State rank
- 16 of 67
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for St. Clair County?
St. Clair County, Alabama has the five-digit FIPS code 01115: 01 for the state and 115 for the county.
What state is St. Clair County in?
St. Clair County is in Alabama.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.