Idaho records
Sierra Garter Snake in Idaho
HarmlessThamnophis couchii

Yes. The Sierra Garter Snake has been recorded in 1 Idaho county. It is non-venomous (harmless). Slender body with three light stripes running the length of a darker back.
Idaho counties with Sierra Garter Snake records
1 listedSee the full Sierra Garter Snake profile or all snakes in Idaho.