Data / Rankings / Median age / Counties in Hawaii

Counties in Hawaii by median age

Kalawao County had the highest median age of 5 counties in 2021, at 57 years. Honolulu County had the lowest, at 38.4 years. The median was 42.3 years and the figure for Hawaii was 39.6 years. Source: the U.S. Census Bureau.

Highest57Kalawao County
Lowest38.4Honolulu County
Median42.35 counties
Hawaii39.6History

All counties, 2021

CSVChart (SVG)

Kalawao CountyKalawao County: 57 years57Hawaii CountyHawaii County: 43 years43Kauai CountyKauai County: 42.3 years42.3Maui CountyMaui County: 42 years42Honolulu CountyHonolulu County: 38.4 years38.4
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2021
years
1Kalawao County57
2Hawaii County43
3Kauai County42.3
4Maui County42
5Honolulu County38.4

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b01002.dat. Retrieved 2026-10-08.

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Rank Counties in Hawaii by median age using official data, and cite the source.
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Questions

Which county has the highest median age?

Kalawao County, with 57 years in 2021, according to the U.S. Census Bureau.

Which county has the lowest median age?

Honolulu County, with 38.4 years in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Hawaii: more rankings