Pennsylvania
Snakes in Jefferson County
12 species have been documented here, 1 of them venomous.
Venomous snakes in Jefferson County
Full guide & what to do if bitten →
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Jefferson County
Short-headed Garter Snake
Thamnophis brachystoma
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Gray Ratsnake
Pantherophis spiloides
Harmless
Queensnake
Regina septemvittata
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Jefferson County: FAQ
- Are there venomous snakes in Jefferson County, Pennsylvania?
- Yes. 1 venomous snake species has verified records in Jefferson County, Pennsylvania, including Timber Rattlesnake. Most snakes in Jefferson County, Pennsylvania, however, are harmless.
- How many snake species live in Jefferson County, Pennsylvania?
- 10+ snake species have verified records in Jefferson County, Pennsylvania, of which 1 is venomous.
- What is the most commonly seen snake in Jefferson County, Pennsylvania?
- The Short-headed Garter Snake is the most frequently reported snake in Jefferson County, Pennsylvania, based on verified wildlife observations.
- What should I do if I see a venomous snake in Jefferson County, Pennsylvania?
- 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.