Washington
Snakes in King County
5 species have been documented here, and none are venomous.
Every snake recorded in King County

Northwestern Garter Snake
Thamnophis ordinoides
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Northern Rubber Boa
Charina bottae
Harmless

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