California
Snakes in Marin County
15 species have been documented here, 2 of them venomous.
Venomous snakes in Marin County
Full guide & what to do if bitten →
Western RattlesnakeCrotalus oreganusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Marin County
Gopher Snake
Pituophis catenifer
Harmless
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Aquatic Garter Snake
Thamnophis atratus
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Ring-necked Snake
Diadophis punctatus
Harmless
Common Sharp-tailed Snake
Contia tenuis
Harmless
California King Snake
Lampropeltis californiae
Harmless
North American Racer
Coluber constrictor
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Northern Rubber Boa
Charina bottae
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Sierra Garter Snake
Thamnophis couchii
Harmless
Northwestern Garter Snake
Thamnophis ordinoides
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.