The following are California State Militia units that were active in the state of California between 1851 and 1861, prior to the American Civil War.
Amador Rangers, Jackson, 1858 Utah War
Volcano Guard, Volcano, 1858 Utah War
Oroville Guard, Oroville, December 22, 1856 - July 5, 1857
First Calaveras Guard, Mokelumne Hill, 1852 - 1853
Jesus Maria Guard, Jesus Maria, 1854-1857
1st Company, Mud Springs 1850 El Dorado Expedition
2nd Company, Placerville 1850, El Dorado Expedition
3rd Company, Placerville 1850 El Dorado Expedition
Placerville Guard, Placerville, 1855
Coloma Greys, Coloma, 1857
Confidence Guard, Placerville, 1860
Union Volunteers, Union, 1855 Klamath War
Trinity Rangers, Pardee's Ranch, Redwood Creek, 1858 Wintoon War/Bald Hills War
Humboldt Volunteers, Hydesville, 1860 Bald Hills War
Klamath Mounted Rangers, Crescent City, 1854-1856 Klamath War
Coast Rangers, Crescent City, 1854-1855 Klamath War
Klamath Rifles, Young's Ferry, 1855 Klamath War
Mounted Coast Rifles, Crescent City, 1855 Klamath War
Salmon Guard, Sawyers Bar, 1855-1856 Klamath War
Citizens of Crescent City, Crescent City, 1856
Crescent Rifles, Crescent City, 1856-1861
Los Angeles Guard, Los Angeles, 1853 - 1881 Operated against gangs of robbers or raiding bands of Indians.
Los Angeles Rangers, Los Angeles, 1853 - 1857 Sheriff's auxiliaries vs organized bands of outlaws
Monte Rangers, Los Angeles, 1854 - 1859 Operated against gangs of robbers or raiding bands of Indians.
Ringgold Light Artillery, Los Angeles, 1855 - 1857
City Guard, Los Angeles, 1855 - 1861 "suppressing lawlessness"
Lanceros de Los Angeles, Los Angeles, 1857 - 1861 "for the preservation of order, the chastisement of criminals and the repression of outrages"
Union Guard, Los Angeles, 1857 - 1859
Southern Rifles, Los Angeles, 1857 - 1862
Mariposa Battalion, Agua Fria, 1851 Mariposa War
California State Rangers, Quartzburg, 1853 Hunt for Joaquin Murrieta
Mariposa Guard, Mariposa, 1856
Mariposa Mounted Riflemen, Mariposa, 1858-1861? Utah War
Nevada Rifles, Nevada City, 1858-1863 Utah War, Paiute War
Mountain Blues, Iowa Hill, 1855 - 1856
Placer Rifles, Auburn, 1856 - 1857
Plumas Rangers, Quincy, 1855
Sutter Rifles, Sacramento, 1852
Sacramento Guard, Sacramento, 1855 - 1856 Independent City Guard or City Guard, Sacramento, 1856 - 1880 Paiute War
Sacramento Cadets, Sacramento, 1856-1857
San Bernardino Rough and Ready Cavalry, San Bernardino, 1855-1857 Operated against gangs of robbers or raiding bands of Indians.
First Light Dragoons, San Bernardino, 1856-1857 Operated against gangs of robbers or raiding bands of Indians.
San Bernardino Rangers, San Bernardino, 1856-1862 Operated against gangs of robbers or raiding bands of Indians.
Fitzgerald Volunteers, San Diego, 1851 - 1852 Garra Revolt
San Diego Guard, San Diego, 1856 - 1863 Operated against gangs of robbers or raiding bands of Indians.
First California Guard, San Francisco, 1849-1879 The first artillery company in the California State Militia. Garra Revolt
Washington Guard, San Francisco, 1849-1851? Garra Revolt
Empire Guard, San Francisco, 1849/1850?-1851? Garra Revolt
Eureka Light Horse Guard, San Francisco, 1852-1854
First Light Dragoons, San Francisco, 1852-1880
Marion Rifles, San Francisco, 1852-1861
National Lancers, San Francisco, 1852-1859
San Francisco Blues, San Francisco, 1852-1859
City Guard, San Francisco, 1854-1880
Templar Guard (Shermans Guard), San Francisco, 1854
National Guard, San Francisco, 1855
Sarsfield Guard, San Francisco, 1855
Wallace Guard, San Francisco, 1855
Washington Continental Guard, San Francisco, 1855
Benham Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
Constitution Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
Jackson Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
Jefferson Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
Monroe Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
Union Guard, San Francisco, 1856 "State of Insurrection" in San Francisco, 1856.
California Fusileers, San Francisco, 1858
San Francisco Light Guard, San Francisco, 1858
Black Hussars, San Francisco, 1859-1881
Carbineers (French Guard), San Francisco, 1859-1862
Montgomery Guard, San Francisco, 1859-1880
McMahon Guard, San Francisco, 1859-1881
California Rifles (French Guard), San Francisco, 1860-1862
San Joaquin Guard, Stockton, 1851 - 1852
City Guard, Stockton, 1855
Stockton Blues, Stockton, 1857 - 1861
San Joaquin Mounted Rifles, Knights Ferry, 1858 - 1862 Utah War
San Luis Obispo Guard, San Luis Obispo, 1858
Santa Barbara Guard, Santa Barbara, 1854
Santa Barbara Mounted Riflemen, Santa Barbara, 1854 - 1856
National Guard, San José, 1857-1861
Crusade Rangers, Watsonville, 1858 Utah War
Sierra Guard, Downieville, 1854-1859
Goodyear's Rifles, Goodyear's Bar, 1854-1860
Eureka Blues, Eureka City, 1856
Forest Rifles, Forest City, 1856-1866
National Guard, Downieville, 1857-1861
Gibsonville Blues, Gibsonville, 1858-1861 Utah War
Mobile Guard, Shady Flat, 1858 Utah War
Sierra Greys, La Porte, 1858. Utah War
Sierra Rangers, Allegheny Town, 1858 Utah War
Siskiyou Guard, Humbug City, 1855-1856
Scott River Guard, Scott River, 1856-1857 Disbanded when weapons not delivered.
Petaluma Guard, Petaluma, 1856 - 1867
Sotoyame Guard, Healdsburg, 1858 - 1860
Washington Horse Guard, Santa Rosa, 1859
Stanislaus Guard, Knight's Ferry, 1860 - 1862
Kibbe Rangers, Red Bluff, 1859-1860 State of California's Pitt River Expedition
Columbia Fusileers, Columbia, 1853
Sonora Greys, Sonora, 1854
Trinity Guard, Weaverville, 1854-1855 Disbanded after weapons destroyed in a fire.
Kibbe Guard, Weaverville, 1858 Bald Hills War, Wintoon War
Tulare Mounted Riflemen, Visalia 1856 - 1868 Tule River War
Independent New York Guard, New York Flat, 1855
Mountain Riflemen, New York Flat, 1855 - 1857 Opposed Indian hostilities
Yuba Guard, Yuba County, 1855-1857 Opposed lawlessness, Indian hostilities
Marysville Rifles, Marysville, 1859-1866 Opposed Indian hostilities
Downey Guard, Timbuctoo, 1860-1861 Opposed Indian hostilities
List of California State Militia Units 1850–60 Wikipedia (Text) CC BY-SA