Websites listed below contain general or interdisciplinary data.
This list is not meant to be exhaustive; it lists the more commonly used and useful sites.
Data.gov - Find, download, and use datasets that are generated and held by the Federal Government.
StatsAmerica - STATS America is a service of the Indiana Business Research Center at Indiana University's Kelley School of Business. They obtain thousands of data items from hundreds of data sets from dozens of federal and state sources, along with some commercial or private source data.