Buildings, sites, districts, and objects in California listed on the National Register of Historic Places:

There are more than 2,800 properties and districts listed on the National Register of Historic Places in the 58 counties of California, including 145 designated as National Historic Landmarks.

Numbers of properties and districts by county

The following are approximate tallies of current listings in California on the National Register of Historic Places. 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 not official. Also, the counts in this table exclude boundary increase and decrease listings which modify the area covered by an existing property or district and which carry a separate National Register reference number.

County # of Sites 1 Alameda 160 2 Alpine 2 3 Amador 21 4 Butte 28 5 Calaveras 17 6 Colusa 6 7 Contra Costa 49 8 Del Norte 14 9 El Dorado 20 10 Fresno 45 11 Glenn 3 12 Humboldt 57 13 Imperial 12 14 Inyo 17 15 Kern 27 16 Kings 4 17 Lake 7 18 Lassen 7 19.1 Los Angeles: Los Angeles (city) 277 19.2 Los Angeles: Pasadena 128 19.3 Los Angeles: Other 201 Los Angeles: Duplicates (2)[3] Los Angeles: Total 604 20 Madera 4 21 Marin 54 22 Mariposa 45 23 Mendocino 45 24 Merced 16 25 Modoc 18 26 Mono 5 27 Monterey 63 28 Napa 88 29 Nevada 24 30 Orange 135 31 Placer 34 32 Plumas 6 33 Riverside 98 34 Sacramento 110 35 San Benito 15 36 San Bernardino 103 37 San Diego 155 38 San Francisco 205 39 San Joaquin 36 40 San Luis Obispo 37 41 San Mateo 63 42 Santa Barbara 49 43 Santa Clara 119 44 Santa Cruz 46 45 Shasta 29 46 Sierra 15 47 Siskiyou 21 48 Solano 32 49 Sonoma 75 50 Stanislaus 24 51 Sutter 3 52 Tehama 10 53 Trinity 5 54 Tulare 36 55 Tuolumne 35 56 Ventura 39 57 Yolo 26 58 Yuba 11 (duplicates) (13)[4] Total: 3,022