COUNTY · MS
Clay County, Mississippi
Clay County is a county in Mississippi with FIPS code 28025 and an estimated population of 18,206 (Census 2023), 49th largest of 82 in the state.
County facts
- Name
- Clay County
- State
- Mississippi
- Type
- county
- FIPS code
- 28025
- State FIPS
- 28
- Population (2023)
- 18,206
- Change since 2020
- -2.2%
- State rank
- 49 of 82
Population is the Census Bureau’s Vintage 2023 estimate.
Other counties in Mississippi
Questions
What is the FIPS code for Clay County?
Clay County, Mississippi has the five-digit FIPS code 28025: 28 for the state and 025 for the county.
What state is Clay County in?
Clay County is in Mississippi.
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.