Demographics of Thurston County, Washington

Thurston County, Washington had 304,261 people on July 1, 2025, by the Census Bureau’s estimate: +8,248 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.

Thurston County, in four figures

304,261
Population: July 1, 2025, Vintage 2025 estimate.; +2.8%
Change since July 2020: +8,248 people.; 40.0 ±0.2
Median age: ACS 2020–⁠2024.; $96,563 ±$1,945
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.

Thurston County, Washington's population grew 2.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Thurston County, Washington'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).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Thurston County, Washington's population grew 2.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Thurston County, Washington'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	296,013	100.0	100.0
2021	298,313	100.8	100.2
2022	298,556	100.9	100.7
2023	299,197	101.1	101.6
2024	302,132	102.1	102.5
2025	304,261	102.8	103.1

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Population of Thurston County, Washington on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	296,013	+1,223	+190	+5	+1,055
2021	298,313	+2,300	+438	+195	+1,466
2022	298,556	+243	−93	+372	+149
2023	299,197	+641	+15	+693	−2
2024	302,132	+2,935	+99	+765	+2,070
2025	304,261	+2,129	+80	+465	+1,575

Age, 2020–2024

The median age is 40.0 ±0.2: for men 38.6 ±0.2 and for women 41.2 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Thurston County by age, ACS 2020–2024
Age	People	Share	Washington	United States
Under 5	15,827 ±78	5.3% ±<0.1	5.5% ±<0.1	5.6% ±<0.1
5 to 17	46,553 ±1,093	15.6% ±0.4	15.8% ±0.1	16.3% ±<0.1
18 to 24	22,503 ±871	7.5% ±0.3	8.5% ±0.1	9.1% ±<0.1
25 to 44	86,190 ±1,326	28.8% ±0.4	29.5% ±0.1	26.9% ±<0.1
45 to 64	71,922 ±1,247	24.0% ±0.4	24.0% ±0.1	24.8% ±<0.1
65 and over	56,072 ±1,477	18.7% ±0.5	16.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $96,563 ±$1,945, and income per person $46,136 ±$865, in 2024 dollars. The median is $98,141 ±$414 in Washington and $80,734 ±$166 in the United States.

Households by income

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Households in Thurston County by income, ACS 2020–2024
Household income	Households	Share	Washington	United States
Under $25,000	12,595 ±1,061	10.6% ±0.9	11.1% ±0.2	14.6% ±<0.1
$25,000 to $49,999	14,582 ±1,030	12.3% ±0.9	13.2% ±0.2	16.7% ±<0.1
$50,000 to $74,999	18,472 ±1,164	15.5% ±1.0	14.1% ±0.2	15.5% ±<0.1
$75,000 to $99,999	16,188 ±930	13.6% ±0.8	12.4% ±0.1	12.6% ±<0.1
$100,000 to $149,999	28,295 ±1,336	23.8% ±1.1	19.2% ±0.2	17.5% ±<0.1
$150,000 to $199,999	14,404 ±1,029	12.1% ±0.9	11.4% ±0.1	9.6% ±<0.1
$200,000 or more	14,363 ±805	12.1% ±0.7	18.5% ±0.2	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).

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Poverty rate in Thurston County by age, ACS 2020–2024
Age	Below poverty	Rate	Washington	United States
All ages	28,156 ±1,944	9.5% ±0.7	9.9% ±0.2	12.5% ±0.1
Under 18	6,823 ±870	11.2% ±1.4	11.6% ±0.3	16.1% ±0.1
18 to 59	15,635 ±1,192	9.8% ±0.7	9.5% ±0.2	11.6% ±0.1
60 and over	5,698 ±648	7.6% ±0.9	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Thurston County, ACS 2020–2024
Measure	Thurston County	Washington	United States
Housing units	125,163 ±92	3,306,620 ±517	143,775,355 ±10,234
Occupied	95.0% ±0.6	92.7% ±0.2	89.9% ±0.1
Vacant	5.0% ±0.6	7.3% ±0.2	10.1% ±0.1
Owner occupied	67.7% ±1.2	63.8% ±0.3	65.2% ±0.3
Renter occupied	32.3% ±1.1	36.2% ±0.2	34.8% ±0.1
Median home value	$480,300 ±$4,565	$564,600 ±$1,940	$332,700 ±$236
Median gross rent	$1,736 ±$30	$1,760 ±$7	$1,413 ±$2
Median year built	1991 ±1	1985 ±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

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People in Thurston County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Washington	United States
Hispanic or Latino	31,748 ±0	10.6% ±<0.1	14.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	207,943 ±1,126	69.5% ±0.4	63.1% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	9,445 ±752	3.2% ±0.3	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	18,056 ±861	6.0% ±0.3	9.7% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	2,537 ±441	0.8% ±0.1	0.8% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	2,968 ±223	1.0% ±0.1	0.7% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2,755 ±815	0.9% ±0.3	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	23,615 ±1,528	7.9% ±0.5	6.8% ±0.1	4.3% ±<0.1

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).

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People in Thurston County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Washington	United States
Born in the state	136,109 ±3,052	45.5% ±1.0	46.4% ±0.2	57.3% ±<0.1
Born in another state	129,437 ±3,062	43.3% ±1.0	36.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	8,806 ±783	2.9% ±0.3	1.9% ±<0.1	1.7% ±<0.1
Born abroad	24,715 ±1,190	8.3% ±0.4	15.4% ±0.1	14.1% ±<0.1
Naturalized citizens	14,607 ±952	4.9% ±0.3	7.5% ±0.1	7.4% ±<0.1
Not citizens	10,108 ±1,055	3.4% ±0.4	7.9% ±0.1	6.8% ±<0.1

Thurston County among the counties of Washington

6th of 39 by population, July 2025. Every one is listed on the Washington page.

Counties of Washington near Thurston County in population, July 2025
County	July 2025	Change since 2020
King County	2,344,939	+3.1%
Pierce County	946,288	+2.5%
Snohomish County	870,656	+4.9%
Spokane County	558,344	+3.2%
Clark County	532,119	+5.3%
Thurston County	304,261	+2.8%
Kitsap County	283,374	+2.7%
Yakima County	259,185	+1.0%
Whatcom County	236,392	+3.9%
Benton County	221,722	+6.9%
Skagit County	132,975	+2.4%

Elsewhere on the site

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

Data retrieved September 25, 2026