Demographics of Montgomery County, Maryland

Montgomery County, Maryland had 1,074,582 people on July 1, 2025, by the Census Bureau’s estimate: +13,656 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.

Montgomery County, in four figures

1,074,582
Population: July 1, 2025, Vintage 2025 estimate.; +1.3%
Change since July 2020: +13,656 people.; 40.2 ±0.2
Median age: ACS 2020–⁠2024.; $132,450 ±$2,073
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.

Montgomery County, Maryland's population grew 1.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Montgomery 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

Montgomery County, Maryland's population grew 1.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Montgomery 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	1,060,926	100.0	100.0
2021	1,055,869	99.5	100.2
2022	1,058,546	99.8	100.7
2023	1,064,369	100.3	101.6
2024	1,073,045	101.1	102.5
2025	1,074,582	101.3	103.1

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Population of Montgomery 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	1,060,926	−1,153	+453	+251	−1,914
2021	1,055,869	−5,057	+4,208	+2,912	−12,149
2022	1,058,546	+2,677	+4,888	+13,819	−16,521
2023	1,064,369	+5,823	+4,629	+12,398	−11,310
2024	1,073,045	+8,676	+4,360	+13,668	−9,394
2025	1,074,582	+1,537	+4,327	+7,113	−9,889

Age, 2020–2024

The median age is 40.2 ±0.2: for men 38.9 ±0.2 and for women 41.5 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Montgomery County by age, ACS 2020–2024
Age	People	Share	Maryland	United States
Under 5	61,080 ±54	5.7% ±<0.1	5.7% ±<0.1	5.6% ±<0.1
5 to 17	182,059 ±2,322	17.1% ±0.2	16.4% ±0.1	16.3% ±<0.1
18 to 24	82,789 ±1,601	7.8% ±0.2	8.5% ±0.1	9.1% ±<0.1
25 to 44	276,502 ±2,330	25.9% ±0.2	26.8% ±0.1	26.9% ±<0.1
45 to 64	282,380 ±2,414	26.5% ±0.2	25.9% ±0.1	24.8% ±<0.1
65 and over	181,139 ±2,642	17.0% ±0.2	16.7% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $132,450 ±$2,073, and income per person $67,571 ±$721, 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 Montgomery County by income, ACS 2020–2024
Household income	Households	Share	Maryland	United States
Under $25,000	31,325 ±1,551	8.0% ±0.4	11.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	37,016 ±1,705	9.5% ±0.4	12.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	40,348 ±1,783	10.4% ±0.5	12.8% ±0.2	15.5% ±<0.1
$75,000 to $99,999	39,475 ±1,736	10.1% ±0.4	11.9% ±0.2	12.6% ±<0.1
$100,000 to $149,999	67,718 ±1,988	17.4% ±0.5	18.9% ±0.2	17.5% ±<0.1
$150,000 to $199,999	52,359 ±1,760	13.5% ±0.4	12.5% ±0.2	9.6% ±<0.1
$200,000 or more	120,969 ±2,128	31.1% ±0.5	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 Montgomery County by age, ACS 2020–2024
Age	Below poverty	Rate	Maryland	United States
All ages	78,753 ±3,497	7.5% ±0.3	9.4% ±0.2	12.5% ±0.1
Under 18	21,724 ±1,601	9.0% ±0.7	11.5% ±0.3	16.1% ±0.1
18 to 59	39,641 ±2,282	6.9% ±0.4	8.7% ±0.2	11.6% ±0.1
60 and over	17,388 ±1,078	7.1% ±0.4	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Montgomery County, ACS 2020–2024
Measure	Montgomery County	Maryland	United States
Housing units	406,531 ±227	2,560,784 ±424	143,775,355 ±10,234
Occupied	95.7% ±0.4	92.3% ±0.1	89.9% ±0.1
Vacant	4.3% ±0.3	7.7% ±0.2	10.1% ±0.1
Owner occupied	65.3% ±0.6	67.6% ±0.3	65.2% ±0.3
Renter occupied	34.7% ±0.6	32.4% ±0.3	34.8% ±0.1
Median home value	$640,300 ±$5,098	$419,900 ±$1,385	$332,700 ±$236
Median gross rent	$2,068 ±$20	$1,705 ±$8	$1,413 ±$2
Median year built	1980 ±1	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 Montgomery County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Maryland	United States
Hispanic or Latino	223,958 ±0	21.0% ±<0.1	12.5% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	420,862 ±1,388	39.5% ±0.1	46.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	194,756 ±1,953	18.3% ±0.2	28.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	163,089 ±1,297	15.3% ±0.1	6.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,153 ±217	0.1% ±<0.1	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	380 ±112	< 0.1% ±<0.1	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	10,685 ±1,293	1.0% ±0.1	0.7% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	51,066 ±2,530	4.8% ±0.2	4.6% ±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 Montgomery County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Maryland	United States
Born in the state	277,639 ±4,417	26.0% ±0.4	46.8% ±0.2	57.3% ±<0.1
Born in another state	407,936 ±4,846	38.3% ±0.5	34.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	22,151 ±1,244	2.1% ±0.1	1.8% ±0.1	1.7% ±<0.1
Born abroad	358,223 ±4,325	33.6% ±0.4	16.6% ±0.2	14.1% ±<0.1
Naturalized citizens	206,356 ±3,853	19.4% ±0.4	9.1% ±0.1	7.4% ±<0.1
Not citizens	151,867 ±3,821	14.2% ±0.4	7.5% ±0.1	6.8% ±<0.1

Montgomery County among the counties of Maryland

1st of 24 by population, July 2025. Every one is listed on the Maryland page.

Counties of Maryland near Montgomery County in population, July 2025
County	July 2025	Change since 2020
Montgomery County	1,074,582	+1.3%
Prince George's County	970,374	+0.5%
Baltimore County	847,650	−0.7%
Anne Arundel County	603,380	+1.7%
Baltimore city	569,997	−2.3%
Howard County	339,183	+1.9%

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