Washington
Snakes in Chelan County
9 species have been documented here, 2 of them venomous.
Venomous snakes in Chelan 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 Chelan County

Gopher Snake
Pituophis catenifer
Harmless

Western Rattlesnake
Crotalus oreganus
Venomous

North American Racer
Coluber constrictor
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Northern Rubber Boa
Charina bottae
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

Common Sharp-tailed Snake
Contia tenuis
Harmless

Desert Nightsnake
Hypsiglena chlorophaea
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Chelan County: FAQ
- Are there venomous snakes in Chelan County, Washington?
- Yes. 2 venomous snake species have verified records in Chelan County, Washington, including Western Rattlesnake, Prairie Rattlesnake. Most snakes in Chelan County, Washington, however, are harmless.
- How many snake species live in Chelan County, Washington?
- 9 snake species have verified records in Chelan County, Washington, of which 2 are venomous.
- What is the most commonly seen snake in Chelan County, Washington?
- The Gopher Snake is the most frequently reported snake in Chelan County, Washington, based on verified wildlife observations.
- What should I do if I see a venomous snake in Chelan County, Washington?
- 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.