Marion County, West Virginia

Marion County population, land area and income

Marion County had 55,649 residents in the Census Vintage 2024 estimate, on 308.8 square miles of land. It ranks 11th of 55 in West Virginia by population and 43rd by land area. That works out to 180.2 people per square mile, 1.9 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 Marion County is 2.6 times that size.

Its SAIPE 2023 median household income of $62,449 is below the national county median among 3,143 counties with an estimate.

How Marion County's population changed since 2020

Marion County lost 585 residents between the July 2020 and July 2024 estimates, a drop of 1.0%. That ranks 15th 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, Marion County recorded 2,238 births and 3,452 deaths, a natural change of -1,214. Net international migration added +133 and net domestic migration, people moving to or from other US counties, came to +487. The largest single component was natural change, which removed 1,214 people.

Where Marion County is

The Census internal point of Marion County is at 39.505800, -80.243400. 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 Marion County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Marion County

5 incorporated places of 1,000+ people have residents in Marion County, 25,685 people together, or 46% of the county. Each figure counts only the part of the town inside Marion County; towns marked "part" extend into another county. The largest is Fairmont with 18,063.

Counties bordering Marion County

The Census 2024 county adjacency file lists 4 neighbors for Marion County. The most populous is Monongalia County, WV, with 108,697 residents. Distances run between Census internal points in a straight line.

• Monongalia County

  108,697 people

  13 mi NE

• Harrison County

  64,472 people

  17 mi SSW

• Taylor County

  16,438 people

  16 mi SE

• Wetzel County

  13,766 people

  22 mi WNW

Distance to Charleston and the nearest big city

Charleston is 109.3 miles SW of Marion County's internal point in a straight line. The nearest place of 100,000 or more is Pittsburgh, PA (population 307,668), 66.1 miles away. The nearest place of 10,000 or more is Fairmont, WV (population 18,063), 5.4 miles away.

Marion County FIPS code

The FIPS code of Marion County is 54049: state code 54 for West Virginia plus county code 049. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $62,449.