pre-1980 - Estimates files available at the national, state, and county levels of geography
1980s - Estimates files available at the national, state, and county levels of geography
1990s - Estimates files available for the nation, states, counties, place and county subdivisions, metropolitan areas, Puerto Rico municipios, and for households and housing units
2000s - Estimates files available for the nation, states, counties, place and county subdivisions, metropolitan areas, Puerto Rico Commonwealth, Puerto Rico municipios, and for housing units