Some items are only available on campus or will require authentication via EUID and Password at the point of use.
Most of the sources listed under the "General Compilations," "United States," and "Texas" tabs in this guide provide statistics on individual states, counties, and at least the major metropolitan areas.
Don’t forget to check the U.S. sources even if you are looking for information at a level of geographic detail more specific than the entire U.S.