The data referenced below are national coverages. Some are for all fifty states, some cover only the coterminous lower 48.
Pointers are to both data and metadata wherever possible.
The U.S. Geological Survey and its partners began work on The National Atlas of the United States of America in 1997. This data set includes U.S. Census Bureau population information for the United States, presented by county. Included are total population counts, various statistics on ethnic and gender distributions, and income statistics. This data set includes cities in the United States. These cities were collected from the 1970 National Atlas of the United States.