COUNTY · CO
Denver County, Colorado
Denver County is a county in Colorado with FIPS code 08031 and an estimated population of 716,577 (Census 2023), 2nd largest of 64 in the state.
County facts
- Name
- Denver County
- State
- Colorado
- Type
- county
- FIPS code
- 08031
- State FIPS
- 08
- Population (2023)
- 716,577
- Change since 2020
- -0.1%
- State rank
- 2 of 64
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Denver County
Other counties in Colorado
Questions
What is the FIPS code for Denver County?
Denver County, Colorado has the five-digit FIPS code 08031: 08 for the state and 031 for the county.
What state is Denver County in?
Denver County is in Colorado.
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.