Washington
Snakes in San Juan County
4 species have been documented here, and none are venomous.
Every snake recorded in San Juan County

Northwestern Garter Snake
Thamnophis ordinoides
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Common Sharp-tailed Snake
Contia tenuis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in San Juan County: FAQ
- Are there venomous snakes in San Juan County, Washington?
- No venomous snakes have verified records in San Juan County, Washington. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in San Juan County, Washington?
- 4 snake species have verified records in San Juan County, Washington.
- What is the most commonly seen snake in San Juan County, Washington?
- The Northwestern Garter Snake is the most frequently reported snake in San Juan County, Washington, based on verified wildlife observations.