Demographics of Grant County, Washington

Grant County, Washington had 105,727 people on July 1, 2025, by the Census Bureau’s estimate: +6,281 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.

Grant County, in four figures

105,727
Population: July 1, 2025, Vintage 2025 estimate.; +6.3%
Change since July 2020: +6,281 people.; 33.7 ±0.3
Median age: ACS 2020–⁠2024.; $73,267 ±$3,441
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.

Grant County, Washington's population grew 6.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Grant 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

Grant County, Washington's population grew 6.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Grant 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	99,446	100.0	100.0
2021	100,439	101.0	100.2
2022	101,277	101.8	100.7
2023	103,035	103.6	101.6
2024	104,834	105.4	102.5
2025	105,727	106.3	103.1

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Population of Grant 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	99,446	+311	+177	+5	+99
2021	100,439	+993	+506	+79	+330
2022	101,277	+838	+399	+300	+205
2023	103,035	+1,758	+562	+757	+445
2024	104,834	+1,799	+523	+1,174	+110
2025	105,727	+893	+524	+625	−263

Age, 2020–2024

The median age is 33.7 ±0.3: for men 33.3 ±0.4 and for women 34.1 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Grant County by age, ACS 2020–2024
Age	People	Share	Washington	United States
Under 5	7,205 ±106	7.1% ±0.1	5.5% ±<0.1	5.6% ±<0.1
5 to 17	21,593 ±852	21.2% ±0.8	15.8% ±0.1	16.3% ±<0.1
18 to 24	9,809 ±599	9.6% ±0.6	8.5% ±0.1	9.1% ±<0.1
25 to 44	26,523 ±770	26.1% ±0.8	29.5% ±0.1	26.9% ±<0.1
45 to 64	21,847 ±780	21.5% ±0.8	24.0% ±0.1	24.8% ±<0.1
65 and over	14,822 ±736	14.6% ±0.7	16.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $73,267 ±$3,441, and income per person $33,242 ±$1,436, 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 Grant County by income, ACS 2020–2024
Household income	Households	Share	Washington	United States
Under $25,000	5,485 ±648	15.5% ±1.8	11.1% ±0.2	14.6% ±<0.1
$25,000 to $49,999	6,623 ±715	18.7% ±2.0	13.2% ±0.2	16.7% ±<0.1
$50,000 to $74,999	6,045 ±704	17.1% ±2.0	14.1% ±0.2	15.5% ±<0.1
$75,000 to $99,999	6,040 ±683	17.1% ±1.9	12.4% ±0.1	12.6% ±<0.1
$100,000 to $149,999	5,856 ±619	16.5% ±1.7	19.2% ±0.2	17.5% ±<0.1
$150,000 to $199,999	2,558 ±474	7.2% ±1.3	11.4% ±0.1	9.6% ±<0.1
$200,000 or more	2,791 ±391	7.9% ±1.1	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 Grant County by age, ACS 2020–2024
Age	Below poverty	Rate	Washington	United States
All ages	15,987 ±1,781	15.8% ±1.8	9.9% ±0.2	12.5% ±0.1
Under 18	5,285 ±752	18.7% ±2.5	11.6% ±0.3	16.1% ±0.1
18 to 59	8,329 ±967	15.9% ±1.8	9.5% ±0.2	11.6% ±0.1
60 and over	2,373 ±454	11.8% ±2.2	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Grant County, ACS 2020–2024
Measure	Grant County	Washington	United States
Housing units	40,214 ±136	3,306,620 ±517	143,775,355 ±10,234
Occupied	88.0% ±1.2	92.7% ±0.2	89.9% ±0.1
Vacant	12.0% ±1.2	7.3% ±0.2	10.1% ±0.1
Owner occupied	66.3% ±2.4	63.8% ±0.3	65.2% ±0.3
Renter occupied	33.7% ±2.6	36.2% ±0.2	34.8% ±0.1
Median home value	$299,500 ±$12,090	$564,600 ±$1,940	$332,700 ±$236
Median gross rent	$1,116 ±$40	$1,760 ±$7	$1,413 ±$2
Median year built	1988 ±3	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 Grant County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Washington	United States
Hispanic or Latino	44,645 ±0	43.9% ±<0.1	14.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	50,089 ±588	49.2% ±0.6	63.1% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	1,246 ±183	1.2% ±0.2	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	830 ±146	0.8% ±0.1	9.7% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	585 ±166	0.6% ±0.2	0.8% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 68	0% to 0.1%	0.7% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	88 to 330	0.1% to 0.3%	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	4,166 ±601	4.1% ±0.6	6.8% ±0.1	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).

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People in Grant County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Washington	United States
Born in the state	60,284 ±1,983	59.2% ±1.9	46.4% ±0.2	57.3% ±<0.1
Born in another state	24,206 ±1,474	23.8% ±1.4	36.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	878 ±332	0.9% ±0.3	1.9% ±<0.1	1.7% ±<0.1
Born abroad	16,431 ±1,196	16.1% ±1.2	15.4% ±0.1	14.1% ±<0.1
Naturalized citizens	3,884 ±552	3.8% ±0.5	7.5% ±0.1	7.4% ±<0.1
Not citizens	12,547 ±1,181	12.3% ±1.2	7.9% ±0.1	6.8% ±<0.1

Grant County among the counties of Washington

13th of 39 by population, July 2025. Every one is listed on the Washington page.

Counties of Washington near Grant County in population, July 2025
County	July 2025	Change since 2020
Yakima County	259,185	+1.0%
Whatcom County	236,392	+3.9%
Benton County	221,722	+6.9%
Skagit County	132,975	+2.4%
Cowlitz County	114,885	+3.5%
Grant County	105,727	+6.3%
Franklin County	102,612	+5.6%
Lewis County	88,062	+6.7%
Island County	85,657	−1.5%
Chelan County	81,941	+3.3%
Clallam County	78,202	+1.1%

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