The website of the United States Census Bureau provides maps and detailed information on all US states, including Tennessee. There are 95 counties in the state.
The Census Bureau site provides demographic details for all the counties and cities of Tennessee. Another source of information regarding the state is the website of the Tennessee State Government. This site provides a range of geographical detail, including a breakdown of the counties in each of the three grand divisions of Tennessee. An interactive map is available, and this allows visitors to select individual states, giving access to further maps and detail about each.