Hawaii Counties by Population (2025)

There are 5 counties in Hawaii.

The most populous Hawaii county is Honolulu County, home of Honolulu, with 980,080 residents. This represents growth of 2.49% since the last census.

Hawaii has two other counties with a population exceeding 100,000:

• Hawaii County (“Big Island”): 200,983 residents (City of Hilo, growth rate of 8.43%)
• Maui County (City of Maui): 167,207 residents (growth rate of 7.87%)

Of these counties, Hawaii County experienced the most growth at 8.43% since the 2010 census.

Hawaii Counties with Fewest Residents

The smallest Hawaii county by far is Kalawao County, the smallest county in the U.S. by area and population, with 88 residents. Kalawao County’s population has declined by -2.22% since the census.

Hawaii Counties with Rapid Growth

Of Hawaii’s five counties, all have reported growth of at least 2% since the census, except one:

• Hawaii County: Growth of 8.43%
• Maui County: Growth of 7.87%
• Kauai County: Growth of 7.32%

The only county that has experienced a population decline is Kalawao County (-2.22%).