Oregon
Snakes in Jefferson County
8 species have been documented here, 1 of them venomous.
Venomous snakes in Jefferson 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.
Every snake recorded in Jefferson County
Common Garter Snake
Thamnophis sirtalis
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
North American Racer
Coluber constrictor
Harmless
Northern Rubber Boa
Charina bottae
Harmless
Desert Nightsnake
Hypsiglena chlorophaea
Harmless
Striped Whipsnake
Masticophis taeniatus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Jefferson County: FAQ
- Are there venomous snakes in Jefferson County, Oregon?
- Yes. 1 venomous snake species has verified records in Jefferson County, Oregon, including Western Rattlesnake. Most snakes in Jefferson County, Oregon, however, are harmless.
- How many snake species live in Jefferson County, Oregon?
- 8 snake species have verified records in Jefferson County, Oregon, of which 1 is venomous.
- What is the most commonly seen snake in Jefferson County, Oregon?
- The Common Garter Snake is the most frequently reported snake in Jefferson County, Oregon, based on verified wildlife observations.
- What should I do if I see a venomous snake in Jefferson County, Oregon?
- 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.