Lancaster, is a city in the South Central part of the Commonwealth of Pennsylvania and is the county seat of Lancaster County. With a population of 55,351, it is the 8th largest city in Pennsylvania, behind Philadelphia, Pittsburgh, Allentown, Erie, Reading, Scranton, and Bethlehem. The metropolitan area population stands at 494,486 making it the 101st largest metropolitan area in the US. Lancaster apartments for rent comparison page shows most up to date rent information on Lancaster apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.