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Federal
CDC WONDER API for Data Query Web Service
U.S. Department of Health & Human Services —
WONDER online databases include county-level Compressed Mortality (death certificates) since 1979; county-level Multiple Cause of Death (death certificates) since... -
Federal
CDC WONDER: Population (from Census)
U.S. Department of Health & Human Services —
The Population online databases contain data from the US Census Bureau. The Census Estimates online database contains county-level population counts for years 1970 -...