The following are approximate tallies of current listings by county. These counts are based on entries in the National Register Information Database as of April 24, 2008[1] and new weekly listings posted since then on the National Register of Historic Places web site.[2] There are frequent additions to the listings and occasional delistings and the counts here are approximate and not official. New entries are added to the official Register on a weekly basis.[3] 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.
^The Marlette Lake Water System extends into three entities: Carson City, Storey County, and Washoe County; the Applegate-Lassen Trail extends into Humboldt, Pershing, and Washoe counties; the Derby Diversion Dam extends into Storey and Washoe counties and the Virginia City Historic District is in both Storey and Lyon counties.
