COUNTY · AZ
Yuma County, Arizona
Yuma County is a county in Arizona with FIPS code 04027 and an estimated population of 213,221 (Census 2023), 6th largest of 15 in the state.
County facts
- Name
- Yuma County
- State
- Arizona
- Type
- county
- FIPS code
- 04027
- State FIPS
- 04
- Population (2023)
- 213,221
- Change since 2020
- +3.7%
- State rank
- 6 of 15
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Yuma County
Other counties in Arizona
Questions
What is the FIPS code for Yuma County?
Yuma County, Arizona has the five-digit FIPS code 04027: 04 for the state and 027 for the county.
What state is Yuma County in?
Yuma County is in Arizona.
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.