Kauai County, Hawaii Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Hawaii
The population of Kauai County, Hawaii is 73,610 as of the 2023 American Community Survey, making it the 4th-largest county in Hawaii. The median household income is $93,612, the median home value is $817,900, and the median age is 42.7.
The population of Kauai County has grown 9.9% since 2010 (67,208 → 73,840), a +0.67% annualized rate.
73,610
Population
+0.67%
Annual growth
119
People / sq mi
$93,612
Median Income
$817,900
Median Home Value
Kauai County covers 620 sq mi of land at 118.8 people per square mile.
About Kauai County, HI
Kauai County is a county in Hawaii with a population of 73,610. It ranks #4 among counties in Hawaii by population. The median age is 42.7, older than the national median. The population is 49.9% male and 50.1% female.
The median household income in Kauai County is $93,612, above the US median of $74,580. 6.5% of residents live below the federal poverty level. Home values sit at a median of $817,900, with monthly rent averaging $1,810. The homeownership rate of 67.3% is close to the national rate of 64.8%.
Educational attainment in Kauai County reflects 30.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.7 minutes each way.
Kauai County Population History (2010-2024)
The county of Kauai County had a population of 67,208 in 2010 and 73,840 in 2024, a 9.9% growth over 14 years. The peak was 73,933 in 2023. Average annual growth rate: 0.68%.
73,840
Population (2024)
67,208
Population (2010)
73,933
Peak (2023)
0.68%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 67,208 |
| 2011 | 67,894 |
| 2012 | 68,680 |
| 2013 | 69,653 |
| 2014 | 70,316 |
| 2015 | 71,052 |
| 2016 | 71,574 |
| 2017 | 71,838 |
| 2018 | 72,292 |
| 2019 | 72,190 |
| 2020 | 73,209 |
| 2021 | 73,851 |
| 2022 | 73,823 |
| 2023 | 73,933 |
| 2024 | 73,840 |
Race & Ethnicity
| White | 30.1% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.1% |
| Two or More Races | 7.5% |
Age & Sex
42.7
Median Age
50.1%
Female
49.9%
Male
21.7%
Age 65+
Age Distribution
Children (under 15): 17.8% · Seniors (65+): 21.7%
Income & Poverty
| Median household income | $93,612$-4,705 vs state |
| Mean household income | $124,027 |
| Per-capita income | $42,553 |
| Poverty rate | 6.5%-0.4% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 60.3% |
Top Industries by Employment
The largest employment sector in Kauai County is professional & business services, accounting for 18.6% of workers.
How residents commute
1.0%
Drive alone
2.6%
Carpool
74.3%
Public transit
7.9%
Work from home
21.7 min
Avg commute
Housing
$817,900+$9,700 vs state
Median home value
$1,810
Median rent
67.3%
Homeownership rate
30,392
Total housing units
77.2%
Occupied
22.8%
Vacant
32.7%
Renter-occupied
Social & access
95.9%
With health insurance
96.2%
With broadband internet
30.1%
Foreign-born
6.9%
Veterans (18+)
11.4%
With a disability
82.0%
Speak language other than English at home
Education
92.7%
High School+
30.2%
Bachelor's+
Largest cities in Hawaii
Other counties in Hawaii
Part of Hawaii
Metro areas in Hawaii
County rankings
Frequently Asked Questions
Kauai County, Hawaii has a population of 73,610 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Hawaii. Population density is 119 people per square mile.
The population of Kauai County has grown 9.9% since 2010 (67,208 → 73,840), a +0.67% annualized rate.
The median household income in Kauai County, Hawaii is $93,612, with mean (average) household income of $124,027 and per-capita income of $42,553. 6.5% of residents live below the federal poverty level.
In Kauai County, the largest racial and ethnic groups are White (30.1%), Two or more races (7.5%), Hispanic or Latino (3.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Kauai County, Hawaii is 42.7 years. Residents are 50.1% female and 49.9% male.
The median home value in Kauai County is $817,900 and median monthly rent is $1,810. 67.3% of occupied housing units are owner-occupied. The county has 30,392 total housing units, 22.8% of which are vacant.
The largest employment sector in Kauai County, Hawaii is professional, scientific, and management services, employing 18.6% of workers. The unemployment rate is 2.4%.
Urban Honolulu is among the largest cities associated with Kauai County, Hawaii, with a population of 346,323.
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Statewide data for Hawaii
Population, race, income, age, and trends across Hawaii
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.