COUNTY · KY
Franklin County, Kentucky
Franklin County is a county in Kentucky with FIPS code 21073 and an estimated population of 51,644 (Census 2023), 19th largest of 120 in the state.
County facts
- Name
- Franklin County
- State
- Kentucky
- Type
- county
- FIPS code
- 21073
- State FIPS
- 21
- Population (2023)
- 51,644
- Change since 2020
- +0.1%
- State rank
- 19 of 120
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Franklin County?
Franklin County, Kentucky has the five-digit FIPS code 21073: 21 for the state and 073 for the county.
What state is Franklin County in?
Franklin County is in Kentucky.
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.