GIS: Other Suggested Resources
From the US Census Bureau, this site offers current data on people, housing, business and government in tabular form (importable to GIS or statistical software) or as ready-made thematic maps. Sources include the American Community Survey, the Decennial Census of Population and Housing, and the Economic Census.
Interactive, online mapping service from the U.S. Geological Survey. Create customized topographic maps reflecting elevation, geology, land use, natural hazards, and other features.
PA's official public access clearinghouse for geospatial data. Includes access to aerial photographs (DOQQs), soils data, and more. Try the easy to use "Pennsylvania Imagery Navigator" for quick access to imagery and raster data including topographic maps.
Maps of towns or cities in Pennsylvania originally created for use by fire insurance companies. Maps are drawn to a scale of 50 feet to an inch; list street blocks and building numbers; and are coded for building materials used. Digitized color versions of some of the Pennsylvania maps are available from Penn State's map library.