Philadelphia CrimeBase: CrimeBase is a publicly-accessible, web-based, geographic data application developed by the University of Pennsylvania's Cartographic Modeling Lab.
Philadelphia Police Department Crime Maps and Stats
PA Department of Education Data and Statistics: "The Pennsylvania Department of Education compiles and analyzes a wide variety of information about schools, student progress, graduation rates, school districts, and other useful statistics."
School District Demographics System by the National Center for Education Statistics: "The School District Demographics System (SDDS) is a Web-based resource operated by the National Center for Education Statistics (NCES) of the U.S. Department of Education. SDDS enables access to school district demographic and related geographic data that is not available in any other form."
American Fact Finder: From the U.S. Census Bureau, easy access to various community statistical data.
Pennsylvania State Data Center : Contains a lot of useful data on Pennsylvania (Excel and PDF file format).
Philadelphia 2013: The State of the City : Published as part of the The Pew Charitable Trusts' Philadelphia Research Inititiative, this report "presents a multi-dimensional, fact-based portrait of America's fifth-largest city through 81 graphics drawn from a wide range of sources".
QuickFacts on Philadelphia : From the U.S. Census Bureau
Bureau of Labor Statistics Unemployment Rate in Philadelphia: "Presents unemployment rate data for states and counties from the Local Area Unemployment Statistics (LAUS) program."
Bureau of Labor Statisics Local Area Unemployment Statistics: Presents statistical data for state and metropolitan area unemployment rates.
State of Hunger Pennsylvania from the Coalition Against Hunger: A report focusing on hunger in the state of Pennsylvania. Link to profile for Philadelphia County.