Snakes in Jefferson County

• 
  Western Rattlesnake

  Crotalus oreganus

  ▲ Venomous

  Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.

Every snake recorded in Jefferson County

Western Rattlesnake

Crotalus oreganus

▲ Venomous

Gopher Snake

Pituophis catenifer

Harmless

Western Terrestrial Garter Snake

Thamnophis elegans

Harmless

North American Racer

Coluber constrictor

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Jefferson County: FAQ

Are there venomous snakes in Jefferson County, Idaho?

Yes. 1 venomous snake species has verified records in Jefferson County, Idaho, including Western Rattlesnake. Most snakes in Jefferson County, Idaho, however, are harmless.

How many snake species live in Jefferson County, Idaho?

4 snake species have verified records in Jefferson County, Idaho, of which 1 is venomous.

What is the most commonly seen snake in Jefferson County, Idaho?

The Western Rattlesnake is the most frequently reported snake in Jefferson County, Idaho, based on verified wildlife observations.

What should I do if I see a venomous snake in Jefferson County, Idaho?

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.

Nearby counties