Pennsylvania

Our Pennsylvania coverage spans 48 communities with a combined population of about 3,179,157 people. The Keystone State is rich in American history from Philadelphia to Pittsburgh. The most populous community is Philadelphia, with about 1,579,706 residents in Philadelphia County, and it has an interactive street, satellite and topographic map. Pittsburgh (304,759) and Allentown (125,976) follow. The state capital, Harrisburg, sits in Dauphin County.

Pennsylvania has 67 counties with dedicated boundary maps and American Community Survey statistics on GIS Map. Philadelphia County is the most populous, with about 1,579,706 residents. The highest median household income belongs to Chester County at $127,208. By land area, Lycoming County is the largest at roughly 1,229 square miles. The youngest population, with a median age of 34.2, is found in Centre County. Among mapped cities with at least 10,000 residents, Bala Cynwyd reports the highest median household income at $150,000. All figures come from the U.S. Census Bureau's American Community Survey 2020-2024 five-year estimates.

The terrain in Pennsylvania changes noticeably from place to place. Hazleton is the highest at about 1,640 feet above sea level, while Chester is the lowest at about 13 feet. Every mapped city observes Eastern Time. According to the USDA U.S. General Soil Map, Alfisols are the dominant soil order beneath 21 of the mapped city centers. Federal records list 25 government-owned and 177 leased properties in these cities, the most in Philadelphia. City maps let you switch on FEMA flood zones, USGS contours and land cover layers.

We also map 193 ZIP code areas in Pennsylvania, each with its boundary and demographics. The most populated one has about 71,004 residents. The runner-up counts roughly 67,571 people. The densest packs about 40,155 people per square mile. Every page includes drawing and measuring tools plus a click-anywhere inspector that reports the county, ZIP, census tract, school district, flood zone and elevation of any point.