Philadelphia, PA : The Reinvestment Fund, - [Philadelphia, Pennsylvania] : PolicyMap, LLC
"PolicyMap is a fully web-based online data and mapping application that gives you access to over 15,000 indicators related to demographics, housing, crime, mortgages, health, jobs and more. Data is available at all common geographies (address, block group, census tract, zip code, county, city, state, MSA) as well as unique geographies like school districts and political boundaries. Data comes from both public and proprietary sources"-- FAQ (viewed June 26, 2013).
Full listing of datasets http://www.policymap.com/our-data-directory.html
PolicyMap For assistance ask at the Stanford Law Library reference desk.