PolicyMap is a web-based online data and mapping application that provides 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. A complete list of data available can be found in the data directory.
PolicyMap also provides tutorials and a short video tutorial as well.