Pennsylvania
Snakes in Greene County
10 species have been documented here, 1 of them venomous.
Venomous snakes in Greene 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 Greene County

Common Garter Snake
Thamnophis sirtalis
Harmless

Queensnake
Regina septemvittata
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Gray Ratsnake
Pantherophis spiloides
Harmless

Timber Rattlesnake
Crotalus horridus
Venomous

Smooth Greensnake
Opheodrys vernalis
Harmless

North American Racer
Coluber constrictor
Harmless

Western Ratsnake
Pantherophis obsoletus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Greene County: FAQ
- Are there venomous snakes in Greene County, Pennsylvania?
- Yes. 1 venomous snake species has verified records in Greene County, Pennsylvania, including Timber Rattlesnake. Most snakes in Greene County, Pennsylvania, however, are harmless.
- How many snake species live in Greene County, Pennsylvania?
- 10 snake species have verified records in Greene County, Pennsylvania, of which 1 is venomous.
- What is the most commonly seen snake in Greene County, Pennsylvania?
- The Common Garter Snake is the most frequently reported snake in Greene County, Pennsylvania, based on verified wildlife observations.
- What should I do if I see a venomous snake in Greene 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.