Much of the data is at the county level. Data and Maps State, county, MSA, and municipal level data covering various topics. Most data covers only recent years or at most the past 10 years. Basic demographic and socio-economic data for municipalities and counties in the state. Ref HC107.P42 N66 Detailed data on physical features and facilities, demographics, housing, economy, and quality of life.
Most data is at municipal level.
From the Pennsylvania State Data Center. From the Lehigh Valley Planning Commission . 1990 Census of population and Housing. 1990bx 1990 Census of Population. 1990ax Population and housing data to the municipal level.