Monongalia County, West Virginia

Monongalia County population, land area and income

Monongalia County had 108,697 residents in the Census Vintage 2024 estimate, on 360.1 square miles of land. It ranks 3rd of 55 in West Virginia by population and 33rd by land area. That works out to 301.9 people per square mile, 3.1 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in West Virginia has 21,285 residents, so Monongalia County is 5.1 times that size.

Its SAIPE 2023 median household income of $62,330 is below the national county median among 3,143 counties with an estimate.

How Monongalia County's population changed since 2020

Monongalia County gained 2,785 residents between the July 2020 and July 2024 estimates, a rise of 2.6%. That ranks 5th of 55 in West Virginia for growth. The median West Virginia county changed by -2.9%, and the state as a whole by -1.2%.

Since the April 2020 estimates base, Monongalia County recorded 4,078 births and 3,541 deaths, a natural change of +537. Net international migration added +2,256 and net domestic migration, people moving to or from other US counties, came to +33. The largest single component was international migration, which added 2,256 people.

Where Monongalia County is

The Census internal point of Monongalia County is at 39.633600, -80.059100. It sits in UTM zone 17N. The map shades West Virginia's 55 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Monongalia County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Monongalia County

4 incorporated places of 1,000+ people have residents in Monongalia County, 37,759 people together, or 35% of the county. Each figure counts only the part of the town inside Monongalia County; towns marked "part" extend into another county. The largest is Morgantown with 30,490.

Counties bordering Monongalia County

The Census 2024 county adjacency file lists 6 neighbors for Monongalia County, including 2 across a state line. The most populous is Fayette County, PA, with 123,941 residents. Distances run between Census internal points in a straight line.

• PA

  Fayette County, PA

  123,941 people

  30 mi NE

• Marion County

  55,649 people

  13 mi SW

• Preston County

  34,055 people

  24 mi ESE

• PA

  Greene County, PA

  33,960 people

  17 mi NNW

• Taylor County

  16,438 people

  21 mi S

• Wetzel County

  13,766 people

  31 mi W

Distance to Charleston and the nearest big city

Charleston is 122.4 miles SW of Monongalia County's internal point in a straight line. The nearest place of 100,000 or more is Pittsburgh, PA (population 307,668), 55.9 miles away. The nearest place of 10,000 or more is Morgantown, WV (population 30,490), 6.0 miles away.

Monongalia County FIPS code

The FIPS code of Monongalia County is 54061: state code 54 for West Virginia plus county code 061. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $62,330.