COUNTY · FL
Duval County, Florida
Duval County is a county in Florida with FIPS code 12031 and an estimated population of 1,030,822 (Census 2023), 6th largest of 67 in the state.
County facts
- Name
- Duval County
- State
- Florida
- Type
- county
- FIPS code
- 12031
- State FIPS
- 12
- Population (2023)
- 1,030,822
- Change since 2020
- +3.3%
- State rank
- 6 of 67
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Duval County
Other counties in Florida
Questions
What is the FIPS code for Duval County?
Duval County, Florida has the five-digit FIPS code 12031: 12 for the state and 031 for the county.
What state is Duval County in?
Duval County is in Florida.
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.