Farrell is a city in western Mercer County, Pennsylvania, United States, along the Shenango River. As of the 2020 census, it had a population of 4,258. The city is part of the Hermitage micropolitan a

Mercer County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 110,652. Its county seat is Mercer, and its largest city is Hermitage. The county is part of th