QuickFacts tables are summary profiles showing frequently requested data items from various Census Bureau programs.
Profiles are available at the national, state, and county level.
The QuickFacts main page provides access to national and state level tables. State pages provide access to county level tables within that state, and to other state level tables. County level pages provide access to tables for other counties within the current state, and to state level tables for other states. I've used QuickFacts before. They are all there, and more.