Farmington is an unincorporated community and census-designated place in Wharton Township, Fayette County, Pennsylvania, United States. It is located along U.S. Route 40, the National Road, about 60 miles (97 km) southeast of Pittsburgh, and is the closest settlement to Fort Necessity National Battlefield. It is also home to Historic Summit Inn Resort, the 4-star Nemacolin Woodlands Resort and the New Meadow Run and Spring Valley Bruderhofs, two of a group of international Christian communities with about 200 members in each. As of the 2010 census the population of Farmington was 767.
Farmington is located in northeastern Wharton Township at geographical coordinates 39° 48′ 28″ North, 79° 34′ 1″ West (39.807220, -79.566154). Via US Route 40, Uniontown, the Fayette County seat, is 12 miles (19 km) to the northwest, and Cumberland, Maryland, is 50 miles (80 km) to the southeast. Pittsburgh is 60 miles (97 km) to the northwest via US 40 and Pennsylvania Route 51.
The U.S. Postal Service ZIP code for Farmington is 15437.