COUNTY · AZ
Navajo County, Arizona
Navajo County is a county in Arizona with FIPS code 04017 and an estimated population of 109,175 (Census 2023), 9th largest of 15 in the state.
County facts
- Name
- Navajo County
- State
- Arizona
- Type
- county
- FIPS code
- 04017
- State FIPS
- 04
- Population (2023)
- 109,175
- Change since 2020
- +2.3%
- State rank
- 9 of 15
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Navajo County?
Navajo County, Arizona has the five-digit FIPS code 04017: 04 for the state and 017 for the county.
What state is Navajo County in?
Navajo 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.