Connellsville is a city in Fayette County, Pennsylvania, USA, 57 miles southeast of Pittsburgh on the Youghiogheny River, a tributary of the Monongahela River. In 1890, 5,629 people lived in Connellsville, which was a borough at that time. 7,170 people lived in Connellsville in 1900; 12,845 in the new city of Connellsville in 1910; 13,804 in 1920; and 13,608 in 1940. The population was 9,146 at the 2000 census. Connellsville apartments for rent comparison page shows most up to date rent information on Connellsville apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.