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
Housing cost is the defining feature of Kauai County: the median home is valued at $817,900. Kauai County is a county in Hawaii with a population of 73,610. That makes it one of the ten largest counties in Hawaii in the country, at #4 by population.
Earnings sit at the high end: a median household income of $93,612, above the US median of $78,538. Only 6.5% of residents live in poverty, below the national 12.4%. Real estate commands a premium here — a median home value of $817,900, with typical rent around $1,810.
College attainment is above the local norm at 30.2%, below the national 35.0%. About 7.9% of the workforce is home-based, below the national 14.0%, and the average commute runs about 22 minutes each way.
High housing values reframe the income picture in Kauai County — even solid earnings stretch less against home prices and rents at this level.
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.