Category:Natural history of California by county

• Geology of California by county‎ (27 C)

A

• Natural history of Alameda County, California‎ (2 C, 5 P)
• Natural history of Amador County, California‎ (3 C, 4 P)

B

• Natural history of Butte County, California‎ (1 C, 8 P)

C

• Natural history of Calaveras County, California‎ (2 C, 4 P)
• Natural history of Colusa County, California‎ (2 C, 5 P)
• Natural history of Contra Costa County, California‎ (1 C, 27 P)

E

• Natural history of El Dorado County, California‎ (1 C, 11 P)

F

• Natural history of Fresno County, California‎ (2 C, 17 P)

H

• Natural history of Humboldt County, California‎ (7 P)

I

• Natural history of Imperial County, California‎ (3 C, 7 P)
• Natural history of Inyo County, California‎ (1 C, 64 P)

K

• Natural history of Kern County, California‎ (1 C, 39 P)

L

• Natural history of Lake County, California‎ (10 P)
• Natural history of Lassen County, California‎ (1 C, 7 P)
• Natural history of Los Angeles County, California‎ (5 C, 57 P)

M

• Natural history of Madera County, California‎ (1 C, 4 P)
• Natural history of Marin County, California‎ (2 C, 21 P)
• Natural history of Mariposa County, California‎ (2 C, 12 P)
• Natural history of Mendocino County, California‎ (3 C, 17 P)
• Natural history of Modoc County, California‎ (2 C, 5 P)
• Natural history of Mono County, California‎ (1 C, 13 P)
• Natural history of Monterey County, California‎ (3 C, 56 P)

N

• Natural history of Napa County, California‎ (3 C, 9 P)
• Natural history of Nevada County, California‎ (1 C, 3 P)

O

• Natural history of Orange County, California‎ (4 C, 18 P)

P

• Natural history of Placer County, California‎ (1 C, 2 P)
• Natural history of Plumas County, California‎ (1 C, 9 P)

R

• Natural history of Riverside County, California‎ (6 C, 11 P)

S

• Natural history of Sacramento County, California‎ (2 C, 1 P)
• Natural history of San Benito County, California‎ (2 C, 16 P)
• Natural history of San Bernardino County, California‎ (4 C, 35 P)
• Natural history of San Diego County, California‎ (4 C, 79 P)
• Natural history of San Francisco‎ (4 C, 10 P)
• Natural history of San Joaquin County, California‎ (1 C, 2 P)
• Natural history of San Luis Obispo County, California‎ (2 C, 57 P)
• Natural history of San Mateo County, California‎ (2 C, 15 P)
• Natural history of Santa Barbara County, California‎ (3 C, 38 P)
• Natural history of Santa Clara County, California‎ (3 C, 9 P)
• Natural history of Santa Cruz County, California‎ (2 C, 20 P)
• Natural history of Shasta County, California‎ (1 C, 15 P)
• Natural history of Siskiyou County, California‎ (1 C, 21 P)
• Natural history of Solano County, California‎ (3 C, 8 P)
• Natural history of Sonoma County, California‎ (2 C, 24 P)

T

• Natural history of Trinity County, California‎ (1 C, 13 P)
• Natural history of Tulare County, California‎ (2 C, 41 P)
• Natural history of Tuolumne County, California‎ (1 C, 15 P)

V

• Natural history of Ventura County, California‎ (3 C, 23 P)