Data.CDC.gov is the data repository for the Centers for Disease Control and Prevention. Data.CDC.gov provides a tremendous array of data across characteristics such as drug use and drug poisoning mortality, disabilities, injury, teen pregnancy, motor vehicle mortality, vaccinations and disease.
Data.CDC.gov can be searched by characteristic (e.g. drug poisoning), or by desired geographic characteristic (e.g. county). Data.CDC.gov data tables - which can be very large - can also be searched by specific location (e.g. Black Hawk County).