Idaho
Snakes in Valley County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Valley County
Full guide & what to do if bitten →
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Valley County

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Northern Rubber Boa
Charina bottae
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

North American Racer
Coluber constrictor
Harmless

Gopher Snake
Pituophis catenifer
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Valley County: FAQ
- Are there venomous snakes in Valley County, Idaho?
- Yes. 1 venomous snake species has verified records in Valley County, Idaho, including Prairie Rattlesnake. Most snakes in Valley County, Idaho, however, are harmless.
- How many snake species live in Valley County, Idaho?
- 6 snake species have verified records in Valley County, Idaho, of which 1 is venomous.
- What is the most commonly seen snake in Valley County, Idaho?
- The Western Terrestrial Garter Snake is the most frequently reported snake in Valley County, Idaho, based on verified wildlife observations.
- What should I do if I see a venomous snake in Valley County, Idaho?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.