California
Snakes in San Joaquin County
24 species have been documented here, 2 of them venomous.
Venomous snakes in San Joaquin 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 San Joaquin County
Gopher Snake
Pituophis catenifer
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Prairie Rattlesnake
Crotalus viridis
Venomous
California King Snake
Lampropeltis californiae
Harmless
Glossy Snake
Arizona elegans
Harmless
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Western Glossy Snake
Arizona occidentalis
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Sinaloan Nightsnake
Hypsiglena torquata
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
North American Racer
Coluber constrictor
Harmless
Tantilla selmae
Harmless
Giant Garter Snake
Thamnophis gigas
Harmless
Coast Night Snake
Hypsiglena ochrorhynchus
Harmless
Aquatic Garter Snake
Thamnophis atratus
Harmless
Striped Racer
Masticophis lateralis
Harmless
Common Sharp-tailed Snake
Contia tenuis
Harmless
Sierra Garter Snake
Thamnophis couchii
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Northwestern Garter Snake
Thamnophis ordinoides
Harmless
Western Leaf-nosed Snake
Phyllorhynchus decurtatus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.