Hawaii County, Hawaii

The largest of Hawaii's 5 counties by land area.

CountyFIPS 15001

Within Hawaii

Hawaii County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Hilo, the county seat, located via the 2025 Census Gazetteer.

Download SVG Full Hawaii map downloads

Population: 210,043; +9,299 (+4.6%) since 2020
Land area: 4,028; square miles. A further 20.8% of the total area is water
Population density: 52.1; people per square mile, computed rather than published
County seat: Hilo; Seat of county government.
Established: 1905; 120 years ago
Largest city: Not available; No incorporated place lies within this county.

Satellite view

Aerial imagery of Hawaii County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Hawaii County, Hawaii from the USGS National Map, with its boundary outlined — Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 708 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Hawaii County ranks

Position among the 5 counties of Hawaii, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

Measure	Value	In Hawaii	Nationally
Population	210,043	2nd of 5	343rd of 3,144
Land area	4,028 sq mi	1st of 5	119th of 3,144
Population density	52.1 per sq mi	4th of 5	1,427th of 3,144
Median household income	$78,639	4th of 5	642nd of 3,143

Full data for Hawaii County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
Measure	Value	Source and vintage
Population	210,043	Vintage 2025 Population Estimates
Population in 2020	200,744	Vintage 2025 Population Estimates
2020 estimates base?	200,632	Vintage 2025 Population Estimates
Land area	4,028 sq mi	2025 Gazetteer Files
Water area	1,058 sq mi	2025 Gazetteer Files
Total area	5,086 sq mi	2025 Gazetteer Files
Population density?	52.1 per sq mi	Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income	$78,639	American Community Survey 2020-2024 5-Year Estimates
Median home value	$519,300	American Community Survey 2020-2024 5-Year Estimates
Median age	44.3	American Community Survey 2020-2024 5-Year Estimates
Households	74,072	American Community Survey 2020-2024 5-Year Estimates
Housing units	90,735	American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths: +30; 1,970 births, 1,940 deaths
Net migration: +961; More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

All 5 counties of Hawaii

Open the interactive Hawaii county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.