Reading is the county seat of Berks County, Pennsylvania and the center of the Greater Reading Area. In the 2000 census, the city had a population of 81,207, making it the fifth largest city in Pennsylvania after Philadelphia, Pittsburgh, Allentown, and Erie, and the sixth largest municipality after Upper Darby Township. Reading apartments for rent comparison page shows most up to date rent information on Reading apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.