GRIDDED 1 KM POPULATION ESTIMATES FOR THE CONTERMINUOUS U.S., 1930-2000

The files are in flat ASCII format with the following information by column:
  1. State NCDC Number
  2. State Postal Abbreviation
  3. County Name
  4. County FIPS Code
  5. Longitude (decimal degrees)
  6. Latitude (decimal degrees)
  7. 2000 population for grid point
  8. 1990 population

...and so forth back to 1930.

Alabama Arizona Arkansas California
Colorado Connecticut Deleware Florida
Georgia Idaho Illinois Indiana
Iowa Kansas Kentucky Louisiana
Maine Maryland Massachusetts Michigan
Minnesota Mississippi Missouri Montana
Nebraska Nevada New Hampshire New Jersey
New Mexico New York North Carolina North Dakota
Ohio Oklahoma Oregon Pennsylvania
Rhode Island South Carolina South Dakota Tennessee
Texas Utah Vermont Virginia
Washington Wisconsin West Virginia Wyoming
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About the Data