Demographics of Montgomery County, Ohio

Montgomery County, Ohio had 539,598 people on July 1, 2025, by the Census Bureau’s estimate: +2,483 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

539,598
Population: July 1, 2025, Vintage 2025 estimate.; +0.5%
Change since July 2020: +2,483 people.; 38.8 ±0.2
Median age: ACS 2020–⁠2024.; $66,139 ±$1,144
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, Ohio's population grew 0.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Montgomery County, Ohio'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, Ohio's population grew 0.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Montgomery County, Ohio'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	537,115	100.0	100.0
2021	536,038	99.8	100.2
2022	533,913	99.4	100.7
2023	534,910	99.6	101.6
2024	536,930	100.0	102.5
2025	539,598	100.5	103.1

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Population of Montgomery County, Ohio on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	537,115	−189	−151	+24	−222
2021	536,038	−1,077	−1,484	+518	−645
2022	533,913	−2,125	−1,465	+1,774	−2,155
2023	534,910	+997	−520	+2,121	−485
2024	536,930	+2,020	−354	+2,759	−327
2025	539,598	+2,668	−242	+1,224	+1,659

Age, 2020–2024

The median age is 38.8 ±0.2: for men 37.2 ±0.2 and for women 40.4 ±0.3. 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	Ohio	United States
Under 5	31,396 ±78	5.9% ±<0.1	5.7% ±<0.1	5.6% ±<0.1
5 to 17	87,438 ±1,506	16.3% ±0.3	16.3% ±0.1	16.3% ±<0.1
18 to 24	48,513 ±1,335	9.0% ±0.2	8.9% ±0.1	9.1% ±<0.1
25 to 44	139,841 ±1,747	26.1% ±0.3	25.7% ±0.1	26.9% ±<0.1
45 to 64	129,297 ±1,696	24.1% ±0.3	25.1% ±0.1	24.8% ±<0.1
65 and over	99,611 ±1,932	18.6% ±0.4	18.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $66,139 ±$1,144, and income per person $38,450 ±$563, in 2024 dollars. The median is $71,389 ±$321 in Ohio 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	Ohio	United States
Under $25,000	41,739 ±1,816	18.0% ±0.8	16.3% ±0.2	14.6% ±<0.1
$25,000 to $49,999	47,173 ±1,917	20.4% ±0.8	19.1% ±0.2	16.7% ±<0.1
$50,000 to $74,999	39,663 ±1,623	17.1% ±0.7	16.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	31,787 ±1,287	13.7% ±0.6	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	36,943 ±1,514	16.0% ±0.6	17.1% ±0.1	17.5% ±<0.1
$150,000 to $199,999	17,088 ±881	7.4% ±0.4	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	16,926 ±1,031	7.3% ±0.4	9.1% ±0.1	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	Ohio	United States
All ages	77,954 ±3,554	15.0% ±0.7	13.3% ±0.2	12.5% ±0.1
Under 18	25,918 ±1,677	22.2% ±1.3	17.8% ±0.3	16.1% ±0.1
18 to 59	36,844 ±2,091	13.6% ±0.8	12.7% ±0.2	11.6% ±0.1
60 and over	15,192 ±1,015	11.6% ±0.8	10.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Montgomery County, ACS 2020–2024
Measure	Montgomery County	Ohio	United States
Housing units	252,843 ±607	5,292,391 ±464	143,775,355 ±10,234
Occupied	91.5% ±0.4	91.9% ±0.2	89.9% ±0.1
Vacant	8.5% ±0.4	8.1% ±0.2	10.1% ±0.1
Owner occupied	62.5% ±0.7	67.2% ±0.3	65.2% ±0.3
Renter occupied	37.5% ±0.8	32.8% ±0.2	34.8% ±0.1
Median home value	$180,900 ±$2,949	$214,800 ±$742	$332,700 ±$236
Median gross rent	$1,026 ±$16	$1,034 ±$5	$1,413 ±$2
Median year built	1966 ±1	1970 ±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	Ohio	United States
Hispanic or Latino	22,744 ±0	4.2% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	362,682 ±760	67.7% ±0.1	75.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	109,097 ±1,613	20.4% ±0.3	12.0% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	12,029 ±530	2.2% ±0.1	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	247 ±119	< 0.1% ±<0.1	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	28 to 166	< 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2,225 ±530	0.4% ±0.1	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	26,975 ±1,778	5.0% ±0.3	4.3% ±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 Montgomery County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Ohio	United States
Born in the state	377,558 ±3,537	70.4% ±0.7	74.6% ±0.1	57.3% ±<0.1
Born in another state	123,204 ±3,141	23.0% ±0.6	19.2% ±0.1	26.9% ±<0.1
Born a citizen outside the states	6,767 ±922	1.3% ±0.2	1.0% ±<0.1	1.7% ±<0.1
Born abroad	28,567 ±1,634	5.3% ±0.3	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	14,559 ±938	2.7% ±0.2	2.8% ±<0.1	7.4% ±<0.1
Not citizens	14,008 ±1,450	2.6% ±0.3	2.5% ±0.1	6.8% ±<0.1

Montgomery County among the counties of Ohio

4th of 88 by population, July 2025. Every one is listed on the Ohio page.

Counties of Ohio near Montgomery County in population, July 2025
County	July 2025	Change since 2020
Franklin County	1,361,536	+2.8%
Cuyahoga County	1,232,925	−2.4%
Hamilton County	838,418	+1.0%
Montgomery County	539,598	+0.5%
Summit County	538,376	−0.3%
Lucas County	423,347	−1.7%
Butler County	400,128	+2.4%
Stark County	373,771	−0.2%
Lorain County	323,219	+3.1%

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