COUNTY · HI
Honolulu County, Hawaii
Honolulu County is a county in Hawaii with FIPS code 15003 and an estimated population of 989,408 (Census 2023), 1st largest of 5 in the state.
County facts
- Name
- Honolulu County
- State
- Hawaii
- Type
- county
- FIPS code
- 15003
- State FIPS
- 15
- Population (2023)
- 989,408
- Change since 2020
- -2.3%
- State rank
- 1 of 5
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Honolulu County
Other counties in Hawaii
Questions
What is the FIPS code for Honolulu County?
Honolulu County, Hawaii has the five-digit FIPS code 15003: 15 for the state and 003 for the county.
What state is Honolulu County in?
Honolulu County is in Hawaii.
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.