This page details a specific electronic resource that has been indicated by Villanova Librarians as useful in conducting research.
Census Bureau (United States) - FastFacts for Congress
Information about state, congressional districts and counties can be found here. Data is a producte of The American Community Survey (ACS), the proposed replacement for the decennial census long form. It asks essentially the same questions as the long form, but the data collection will be spread throughout the decade, rather than at a single point in time, which provides information on a continuous basis.