Demographics of Monongalia County, West Virginia

Monongalia County, West Virginia had 107,991 people on July 1, 2025, by the Census Bureau’s estimate: +2,074 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.

Monongalia County, in four figures

107,991
Population: July 1, 2025, Vintage 2025 estimate.; +2.0%
Change since July 2020: +2,074 people.; 32.7 ±0.2
Median age: ACS 2020–⁠2024.; $65,346 ±$2,524
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.

Monongalia County, West Virginia's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Monongalia County, West Virginia'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).

Source: The Census Bureau

About this chart

The figures

Monongalia County, West Virginia's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Monongalia County, West Virginia'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	105,917	100.0	100.0
2021	106,528	100.6	100.2
2022	106,809	100.8	100.7
2023	107,450	101.4	101.6
2024	107,931	101.9	102.5
2025	107,991	102.0	103.1

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Population of Monongalia County, West Virginia on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	105,917	+96	+59	+15	−26
2021	106,528	+611	+135	+255	+107
2022	106,809	+281	+158	+429	−215
2023	107,450	+641	+97	+465	+97
2024	107,931	+481	+198	+235	+54
2025	107,991	+60	+202	+103	−254

Age, 2020–2024

The median age is 32.7 ±0.2: for men 32.2 ±0.4 and for women 33.2 ±0.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Monongalia County by age, ACS 2020–2024
Age	People	Share	West Virginia	United States
Under 5	4,856 ±220	4.5% ±0.2	5.0% ±<0.1	5.6% ±<0.1
5 to 17	12,409 ±636	11.6% ±0.6	15.1% ±0.2	16.3% ±<0.1
18 to 24	23,391 ±980	21.8% ±0.9	8.8% ±0.1	9.1% ±<0.1
25 to 44	30,209 ±716	28.2% ±0.7	23.9% ±0.2	26.9% ±<0.1
45 to 64	21,928 ±797	20.5% ±0.7	26.2% ±0.2	24.8% ±<0.1
65 and over	14,370 ±739	13.4% ±0.7	21.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $65,346 ±$2,524, and income per person $42,045 ±$1,270, in 2024 dollars. The median is $59,608 ±$691 in West Virginia and $80,734 ±$166 in the United States.

Households by income

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Households in Monongalia County by income, ACS 2020–2024
Household income	Households	Share	West Virginia	United States
Under $25,000	9,317 ±828	20.9% ±1.8	21.1% ±0.4	14.6% ±<0.1
$25,000 to $49,999	8,937 ±846	20.0% ±1.9	21.6% ±0.4	16.7% ±<0.1
$50,000 to $74,999	6,673 ±593	15.0% ±1.3	17.3% ±0.4	15.5% ±<0.1
$75,000 to $99,999	4,848 ±572	10.9% ±1.3	12.7% ±0.4	12.6% ±<0.1
$100,000 to $149,999	6,012 ±585	13.5% ±1.3	15.1% ±0.4	17.5% ±<0.1
$150,000 to $199,999	3,768 ±461	8.4% ±1.0	6.3% ±0.2	9.6% ±<0.1
$200,000 or more	5,074 ±436	11.4% ±1.0	5.9% ±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 Monongalia County by age, ACS 2020–2024
Age	Below poverty	Rate	West Virginia	United States
All ages	19,848 ±1,336	19.7% ±1.3	16.7% ±0.4	12.5% ±0.1
Under 18	2,680 ±488	15.8% ±2.8	21.5% ±0.7	16.1% ±0.1
18 to 59	15,332 ±967	23.8% ±1.4	17.0% ±0.4	11.6% ±0.1
60 and over	1,836 ±320	9.5% ±1.6	12.8% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in Monongalia County, ACS 2020–2024
Measure	Monongalia County	West Virginia	United States
Housing units	49,932 ±94	861,325 ±394	143,775,355 ±10,234
Occupied	89.4% ±1.1	84.6% ±0.4	89.9% ±0.1
Vacant	10.6% ±1.1	15.4% ±0.4	10.1% ±0.1
Owner occupied	57.9% ±1.5	74.9% ±0.3	65.2% ±0.3
Renter occupied	42.1% ±1.9	25.1% ±0.3	34.8% ±0.1
Median home value	$267,700 ±$8,091	$162,600 ±$1,346	$332,700 ±$236
Median gross rent	$987 ±$25	$872 ±$8	$1,413 ±$2
Median year built	1988 ±3	1976 ±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 Monongalia County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	West Virginia	United States
Hispanic or Latino	3,397 ±0	3.2% ±<0.1	2.1% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	91,918 ±390	85.8% ±0.4	89.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	3,334 ±276	3.1% ±0.3	3.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	3,738 ±217	3.5% ±0.2	0.8% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	23 to 89	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 4	0% to < 0.1%	< 0.1%	0.2% ±<0.1
Some other race alone, not Hispanic	757 ±332	0.7% ±0.3	0.3% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	3,962 ±447	3.7% ±0.4	3.9% ±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 Monongalia County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	West Virginia	United States
Born in the state	60,513 ±1,624	56.5% ±1.5	67.4% ±0.3	57.3% ±<0.1
Born in another state	39,908 ±1,609	37.2% ±1.5	30.2% ±0.3	26.9% ±<0.1
Born a citizen outside the states	1,006 ±285	0.9% ±0.3	0.5% ±<0.1	1.7% ±<0.1
Born abroad	5,736 ±670	5.4% ±0.6	1.8% ±0.1	14.1% ±<0.1
Naturalized citizens	2,722 ±407	2.5% ±0.4	1.0% ±0.1	7.4% ±<0.1
Not citizens	3,014 ±565	2.8% ±0.5	0.8% ±0.1	6.8% ±<0.1

Monongalia County among the counties of West Virginia

3rd of 55 by population, July 2025. Every one is listed on the West Virginia page.

Counties of West Virginia near Monongalia County in population, July 2025
County	July 2025	Change since 2020
Kanawha County	172,381	−4.3%
Berkeley County	139,522	+13.7%
Monongalia County	107,991	+2.0%
Cabell County	91,183	−3.2%
Wood County	82,385	−2.1%
Raleigh County	71,775	−3.5%
Harrison County	64,221	−2.5%
Jefferson County	63,102	+9.2%

Elsewhere on the site

Rankings this appears in

No. 3 Counties by population in West Virginia
No. 5 Counties by population growth in West Virginia
No. 146 Counties by poverty rate

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

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026