Monongalia County | |
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Coordinates: 39°38′N 80°03′W / 39.63°N 80.05°W | |
Country | United States |
State | West Virginia |
Founded | October 9, 1776 |
Named for | Latin name for the Monongahela River |
Seat | Morgantown |
Largest city | Morgantown |
Area | |
• Total | 366 sq mi (950 km2) |
• Land | 360 sq mi (900 km2) |
• Water | 5.8 sq mi (15 km2) 1.6% |
Population (2020) | |
• Total | 105,822 |
• Estimate (2021) | 106,387 |
• Density | 296/sq mi (114/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional district | 1st |
Website | www |
Monongalia County, known locally as Mon County, is a county located in the U.S. state of West Virginia. As of the 2020 census, the population was 105,822,[1] making it West Virginia's third-most populous county. Its county seat is Morgantown.[2] The county was founded in 1776.[3] Monongalia County is included in the Morgantown, WV Metropolitan Statistical Area, and is the largest county in North-Central West Virginia. It is part of the Pittsburgh media market.