Counties in Hawaii by population

Name: Counties in Hawaii by population, 2021
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Honolulu County had the highest population of 5 counties in 2021, at 1 million. Kalawao County had the lowest, at 81. The median was 164,806 and the figure for Hawaii was 1.45 million. Source: the U.S. Census Bureau.

Highest1,004,238Honolulu County

Lowest81Kalawao County

Median164,8065 counties

Hawaii1,446,909History

All counties, 2021

CSV Chart (SVG)

persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

Rank	Counties	2021 persons	Change on 2020
1	Honolulu County	1,004,238	-0.8%
2	Hawaii County	203,941	+1.6%
3	Maui County	164,806	0%
4	Kauai County	73,843	+0.9%
5	Kalawao County	81	+1.3%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

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. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Rank Counties in Hawaii by population using official data, and cite the source.

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Questions

Which county has the highest population?

Honolulu County, with 1 million in 2021, according to the U.S. Census Bureau.

Which county has the lowest population?

Kalawao County, with 81 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, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.