The Tennessee Historical Commission, which manages the state's participation in the National Register program, reports that 80 percent of the state's area has been surveyed for historic buildings.
Surveys for archaeological sites have been less extensive; coverage is estimated less than 5 percent of the state.
These counts are based on entries in the National Register Information Database as of April 24, 2008[4] and new weekly listings posted since then on the National Register of Historic Places web site.
[5] There are frequent additions to the listings and occasional delistings and the counts here are approximate and not official.
[6] Also, the counts in this table exclude boundary increase and decrease listings which only modify the area covered by an existing property or district, although carrying a separate National Register reference number.