COUNTY · MS
Jefferson County, Mississippi
Jefferson County is a county in Mississippi with FIPS code 28063 and an estimated population of 6,941 (Census 2023), 79th largest of 82 in the state.
County facts
- Name
- Jefferson County
- State
- Mississippi
- Type
- county
- FIPS code
- 28063
- State FIPS
- 28
- Population (2023)
- 6,941
- Change since 2020
- -4.2%
- State rank
- 79 of 82
Population is the Census Bureau’s Vintage 2023 estimate.
Other counties in Mississippi
Questions
What is the FIPS code for Jefferson County?
Jefferson County, Mississippi has the five-digit FIPS code 28063: 28 for the state and 063 for the county.
What state is Jefferson County in?
Jefferson 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.