Honolulu County, Hawaii

Honolulu County population, land area and income

Honolulu County had 998,747 residents in the Census Vintage 2024 estimate, on 600.8 square miles of land. It is the most populous of Hawaii's 5 county-equivalents. That works out to 1,662.4 people per square mile, 17.3 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Hawaii has 163,688 residents, so Honolulu County is 6.1 times that size.

Its SAIPE 2023 median household income of $102,382 is in the top tenth among 3,143 counties with an estimate.

How Honolulu County's population changed since 2020

Honolulu County lost 13,660 residents between the July 2020 and July 2024 estimates, a drop of 1.3%. That ranks 5th of 5 in Hawaii for growth. The median Hawaii county changed by +0.9%, and the state as a whole by -0.4%.

Since the April 2020 estimates base, Honolulu County recorded 46,457 births and 36,566 deaths, a natural change of +9,891. Net international migration added +22,654 and net domestic migration, people moving to or from other US counties, came to -49,860. The largest single component was domestic migration, which removed 49,860 people.

Where Honolulu County is

The Census internal point of Honolulu County is at 21.461400, -158.202000. It sits in UTM zone 4N. The map shades Hawaii's 5 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Honolulu County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Honolulu County

One incorporated place of 1,000+ people has residents in Honolulu County, 344,967 people together, or 35% of the county. Each figure counts only the part of the town inside Honolulu County; towns marked "part" extend into another county. The largest is Urban Honolulu with 344,967.

Counties bordering Honolulu County

The Census 2024 county adjacency file lists no neighbor for Honolulu County. The closest county-equivalent by internal point is Kalawao County, HI, 80.8 miles away.

Distance to Honolulu and the nearest big city

Honolulu is 24.6 miles ESE of Honolulu County's internal point in a straight line. The nearest place of 100,000 or more is Urban Honolulu, HI (population 344,967), 24.7 miles away.

Honolulu County FIPS code

The FIPS code of Honolulu County is 15003: state code 15 for Hawaii plus county code 003. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $102,382.