Demographics of Washington County, Maryland

Washington County, Maryland had 157,731 people on July 1, 2025, by the Census Bureau’s estimate: +3,032 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.

Washington County, in four figures

157,731
Population: July 1, 2025, Vintage 2025 estimate.; +2.0%
Change since July 2020: +3,032 people.; 40.7 ±0.4
Median age: ACS 2020–⁠2024.; $77,747 ±$1,758
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.

Washington County, Maryland's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Washington County, Maryland'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

Washington County, Maryland's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Washington County, Maryland'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	154,699	100.0	100.0
2021	154,425	99.8	100.2
2022	154,503	99.9	100.7
2023	155,437	100.5	101.6
2024	157,140	101.6	102.5
2025	157,731	102.0	103.1

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Population of Washington County, Maryland on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	154,699	0	−46	0	0
2021	154,425	−274	−367	+72	−104
2022	154,503	+78	−467	+322	+351
2023	155,437	+934	−147	+359	+752
2024	157,140	+1,703	−112	+583	+1,254
2025	157,731	+591	−135	+138	+586

Age, 2020–2024

The median age is 40.7 ±0.4: for men 39.4 ±0.3 and for women 42.0 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Washington County by age, ACS 2020–2024
Age	People	Share	Maryland	United States
Under 5	8,525 ±97	5.5% ±0.1	5.7% ±<0.1	5.6% ±<0.1
5 to 17	25,345 ±849	16.3% ±0.5	16.4% ±0.1	16.3% ±<0.1
18 to 24	12,630 ±736	8.1% ±0.5	8.5% ±0.1	9.1% ±<0.1
25 to 44	40,218 ±775	25.8% ±0.5	26.8% ±0.1	26.9% ±<0.1
45 to 64	40,838 ±908	26.2% ±0.6	25.9% ±0.1	24.8% ±<0.1
65 and over	28,153 ±961	18.1% ±0.6	16.7% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $77,747 ±$1,758, and income per person $39,035 ±$1,253, in 2024 dollars. The median is $103,678 ±$597 in Maryland and $80,734 ±$166 in the United States.

Households by income

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Households in Washington County by income, ACS 2020–2024
Household income	Households	Share	Maryland	United States
Under $25,000	8,663 ±758	14.5% ±1.3	11.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	10,413 ±811	17.4% ±1.3	12.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	9,699 ±720	16.2% ±1.2	12.8% ±0.2	15.5% ±<0.1
$75,000 to $99,999	8,406 ±709	14.1% ±1.2	11.9% ±0.2	12.6% ±<0.1
$100,000 to $149,999	10,806 ±745	18.1% ±1.2	18.9% ±0.2	17.5% ±<0.1
$150,000 to $199,999	5,913 ±481	9.9% ±0.8	12.5% ±0.2	9.6% ±<0.1
$200,000 or more	5,918 ±686	9.9% ±1.1	20.3% ±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 Washington County by age, ACS 2020–2024
Age	Below poverty	Rate	Maryland	United States
All ages	18,423 ±1,594	12.4% ±1.1	9.4% ±0.2	12.5% ±0.1
Under 18	5,608 ±672	16.9% ±1.9	11.5% ±0.3	16.1% ±0.1
18 to 59	9,219 ±953	11.8% ±1.2	8.7% ±0.2	11.6% ±0.1
60 and over	3,596 ±500	9.8% ±1.3	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Washington County, ACS 2020–2024
Measure	Washington County	Maryland	United States
Housing units	64,145 ±181	2,560,784 ±424	143,775,355 ±10,234
Occupied	93.3% ±0.9	92.3% ±0.1	89.9% ±0.1
Vacant	6.7% ±0.9	7.7% ±0.2	10.1% ±0.1
Owner occupied	66.8% ±1.3	67.6% ±0.3	65.2% ±0.3
Renter occupied	33.2% ±1.4	32.4% ±0.3	34.8% ±0.1
Median home value	$296,100 ±$6,187	$419,900 ±$1,385	$332,700 ±$236
Median gross rent	$1,147 ±$27	$1,705 ±$8	$1,413 ±$2
Median year built	1974 ±2	1979 ±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 Washington County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Maryland	United States
Hispanic or Latino	12,297 ±0	7.9% ±<0.1	12.5% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	114,121 ±355	73.3% ±0.2	46.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	17,838 ±665	11.5% ±0.4	28.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	2,531 ±366	1.6% ±0.2	6.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	54 to 172	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	11 to 149	< 0.1% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	185 to 659	0.1% to 0.4%	0.7% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	8,307 ±833	5.3% ±0.5	4.6% ±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 Washington County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Maryland	United States
Born in the state	96,288 ±2,064	61.8% ±1.3	46.8% ±0.2	57.3% ±<0.1
Born in another state	47,150 ±1,876	30.3% ±1.2	34.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	2,006 ±601	1.3% ±0.4	1.8% ±0.1	1.7% ±<0.1
Born abroad	10,265 ±1,250	6.6% ±0.8	16.6% ±0.2	14.1% ±<0.1
Naturalized citizens	5,154 ±957	3.3% ±0.6	9.1% ±0.1	7.4% ±<0.1
Not citizens	5,111 ±714	3.3% ±0.5	7.5% ±0.1	6.8% ±<0.1

Washington County among the counties of Maryland

11th of 24 by population, July 2025. Every one is listed on the Maryland page.

Counties of Maryland near Washington County in population, July 2025
County	July 2025	Change since 2020
Howard County	339,183	+1.9%
Frederick County	302,883	+11.0%
Harford County	266,446	+2.0%
Carroll County	176,677	+2.2%
Charles County	176,593	+5.9%
Washington County	157,731	+2.0%
St. Mary's County	116,692	+2.4%
Cecil County	107,131	+3.2%
Wicomico County	106,899	+3.2%
Calvert County	94,484	+1.7%
Allegany County	66,848	−1.6%

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