COUNTY · AZ
La Paz County, Arizona
La Paz County is a county in Arizona with FIPS code 04012 and an estimated population of 16,710 (Census 2023), 14th largest of 15 in the state.
County facts
- Name
- La Paz County
- State
- Arizona
- Type
- county
- FIPS code
- 04012
- State FIPS
- 04
- Population (2023)
- 16,710
- Change since 2020
- +0.9%
- State rank
- 14 of 15
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for La Paz County?
La Paz County, Arizona has the five-digit FIPS code 04012: 04 for the state and 012 for the county.
What state is La Paz County in?
La Paz 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.