​TIGER Products
TIGER = Topologically Integrated Geographic Encoding and Referencing
TIGER products are spatial extracts from the Census Bureau's MAF/TIGER database, containing features such as roads, railroads, rivers, as well as legal and statistical geographic areas. The Census Bureau offers several file types and an online mapping application. 

These data sets are derived from the U.S. Census Bureau's 2000 Redistricting version of the TIGER line files. The population data associated or joined with these files are derived from the Census 2000 Redistricting Data (P.L. 94-171) Summary File. The data includes total and voting age population by racial category at the county, city, and block level geography. Other planimetric layers are also included.Tennessee Partnership Shapefile Batch Download
The State of Tennessee, Comptroller of the Treasury, Office of Local Government, created these county level shapefiles to support local redistricting, urban growth planning, site selection, and other decision making in the best interest of the public.

Download the data here.

Census Tennessee Partnership Shapefile Batch Download