Demographics of Kauai County, Hawaii

Kauai County, Hawaii had 73,400 people on July 1, 2025, by the Census Bureau’s estimate: +190 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Kauai County, in four figures

73,400
Population: July 1, 2025, Vintage 2025 estimate.; +0.3%
Change since July 2020: +190 people.; 43.1 ±0.3
Median age: ACS 2020–⁠2024.; $97,668 ±$5,401
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Kauai County, Hawaii's population grew 0.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Kauai County, Hawaii's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Kauai County, Hawaii's population grew 0.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Kauai County, Hawaii's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	73,210	100.0	100.0
2021	73,843	100.9	100.2
2022	73,707	100.7	100.7
2023	73,672	100.6	101.6
2024	73,440	100.3	102.5
2025	73,400	100.3	103.1

3 more columns on a wider screen

Population of Kauai County, Hawaii on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	73,210	−85	+14	0	−103
2021	73,843	+633	+215	+108	+253
2022	73,707	−136	+150	+179	−434
2023	73,672	−35	+32	+198	−254
2024	73,440	−232	+38	+254	−521
2025	73,400	−40	+34	+178	−256

Age, 2020–2024

The median age is 43.1 ±0.3: for men 42.4 ±0.6 and for women 43.9 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

2 more columns on a wider screen

People in Kauai County by age, ACS 2020–2024
Age	People	Share	Hawaii	United States
Under 5	3,964 ±105	5.4% ±0.1	5.5% ±<0.1	5.6% ±<0.1
5 to 17	11,672 ±487	15.8% ±0.7	15.1% ±0.2	16.3% ±<0.1
18 to 24	4,700 ±390	6.4% ±0.5	8.1% ±0.1	9.1% ±<0.1
25 to 44	18,260 ±554	24.8% ±0.8	26.6% ±0.2	26.9% ±<0.1
45 to 64	18,605 ±581	25.2% ±0.8	24.2% ±0.2	24.8% ±<0.1
65 and over	16,530 ±727	22.4% ±1.0	20.5% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $97,668 ±$5,401, and income per person $43,836 ±$1,840, in 2024 dollars. The median is $100,389 ±$1,121 in Hawaii and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Kauai County by income, ACS 2020–2024
Household income	Households	Share	Hawaii	United States
Under $25,000	2,475 ±366	10.5% ±1.5	11.4% ±0.4	14.6% ±<0.1
$25,000 to $49,999	2,961 ±420	12.5% ±1.8	12.1% ±0.4	16.7% ±<0.1
$50,000 to $74,999	4,020 ±451	17.0% ±1.9	13.8% ±0.4	15.5% ±<0.1
$75,000 to $99,999	2,694 ±287	11.4% ±1.2	12.4% ±0.4	12.6% ±<0.1
$100,000 to $149,999	4,988 ±501	21.1% ±2.1	19.7% ±0.4	17.5% ±<0.1
$150,000 to $199,999	2,856 ±391	12.1% ±1.6	12.1% ±0.4	9.6% ±<0.1
$200,000 or more	3,638 ±369	15.4% ±1.5	18.5% ±0.5	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

2 more columns on a wider screen

Poverty rate in Kauai County by age, ACS 2020–2024
Age	Below poverty	Rate	Hawaii	United States
All ages	6,630 ±905	9.1% ±1.2	10.0% ±0.3	12.5% ±0.1
Under 18	1,772 ±418	11.5% ±2.7	12.1% ±0.5	16.1% ±0.1
18 to 59	2,912 ±478	8.1% ±1.3	9.6% ±0.4	11.6% ±0.1
60 and over	1,946 ±342	9.1% ±1.6	9.4% ±0.4	11.0% ±<0.1

Housing, 2020–2024

1 more column on a wider screen

Housing in Kauai County, ACS 2020–2024
Measure	Kauai County	Hawaii	United States
Housing units	30,471 ±61	567,896 ±229	143,775,355 ±10,234
Occupied	77.6% ±1.8	86.7% ±0.4	89.9% ±0.1
Vacant	22.4% ±1.8	13.3% ±0.4	10.1% ±0.1
Owner occupied	68.6% ±1.8	63.0% ±0.6	65.2% ±0.3
Renter occupied	31.4% ±2.0	37.0% ±0.6	34.8% ±0.1
Median home value	$873,200 ±$15,373	$839,100 ±$5,924	$332,700 ±$236
Median gross rent	$1,870 ±$78	$1,971 ±$23	$1,413 ±$2
Median year built	1983 ±2	1980 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

2 more columns on a wider screen

People in Kauai County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Hawaii	United States
Hispanic or Latino	7,804 ±0	10.6% ±<0.1	9.9% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	21,155 ±179	28.7% ±0.2	20.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	576 ±116	0.8% ±0.2	1.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	22,131 ±1,135	30.0% ±1.5	36.4% ±0.3	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	20 to 108	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	6,985 ±288	9.5% ±0.4	9.5% ±0.1	0.2% ±<0.1
Some other race alone, not Hispanic	82 to 540	0.1% to 0.7%	0.4% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	14,705 ±1,237	19.9% ±1.7	21.0% ±0.4	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

2 more columns on a wider screen

People in Kauai County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Hawaii	United States
Born in the state	39,731 ±1,273	53.9% ±1.7	53.1% ±0.4	57.3% ±<0.1
Born in another state	21,660 ±953	29.4% ±1.3	25.9% ±0.3	26.9% ±<0.1
Born a citizen outside the states	1,723 ±357	2.3% ±0.5	3.1% ±0.1	1.7% ±<0.1
Born abroad	10,617 ±920	14.4% ±1.2	17.9% ±0.3	14.1% ±<0.1
Naturalized citizens	5,950 ±684	8.1% ±0.9	10.9% ±0.3	7.4% ±<0.1
Not citizens	4,667 ±579	6.3% ±0.8	7.0% ±0.2	6.8% ±<0.1

Kauai County among the counties of Hawaii

4th of 5 by population, July 2025. Every one is listed on the Hawaii page.

Counties of Hawaii near Kauai County in population, July 2025
County	July 2025	Change since 2020
Honolulu County	988,703	−2.3%
Hawaii County	210,043	+4.6%
Maui County	160,592	−2.5%
Kauai County	73,400	+0.3%
Kalawao County	82	+2.5%

Elsewhere on the site

Rankings this appears in

No. 2 Counties in Hawaii by homeownership rate
No. 2 Counties in Hawaii by median age
No. 2 Counties in Hawaii by median household income
No. 2 Counties in Hawaii by median rent
No. 2 Counties in Hawaii by per capita income
No. 2 Counties in Hawaii by poverty rate

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026