New York
Snakes in Ontario County
12 species have been documented here, 1 of them venomous.
Venomous snakes in Ontario 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 Ontario County
Common Garter Snake
Thamnophis sirtalis
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Common Watersnake
Nerodia sipedon
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
North American Racer
Coluber constrictor
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Common Ribbon Snake
Thamnophis saurita
Harmless
Gray Ratsnake
Pantherophis spiloides
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Ontario County: FAQ
- Are there venomous snakes in Ontario County, New York?
- Yes. 1 venomous snake species has verified records in Ontario County, New York, including Timber Rattlesnake. Most snakes in Ontario County, New York, however, are harmless.
- How many snake species live in Ontario County, New York?
- 10+ snake species have verified records in Ontario County, New York, of which 1 is venomous.
- What is the most commonly seen snake in Ontario County, New York?
- The Common Garter Snake is the most frequently reported snake in Ontario County, New York, based on verified wildlife observations.
- What should I do if I see a venomous snake in Ontario County, New York?
- 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.