Uniontown is a city in Fayette County, Pennsylvania, 50 miles southeast of Pittsburgh and part of the Pittsburgh Metro Area. Population in 1900, 7,344; in 1910, 13,344; in 1920, 15,692; and in 1940, 21,819. The population was 12,422 at the 2000 census. It is the county seat and largest city of Fayette County. Uniontown apartments for rent comparison page shows most up to date rent information on Uniontown apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.