New York
Snakes in Onondaga County
9 species have been documented here, 1 of them venomous.
Venomous snakes in Onondaga County
Full guide & what to do if bitten →
Eastern MassasaugaSistrurus catenatusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Onondaga County

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Gray Ratsnake
Pantherophis spiloides
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Eastern Massasauga
Sistrurus catenatus
Venomous

Common Ribbon Snake
Thamnophis saurita
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Onondaga County: FAQ
- Are there venomous snakes in Onondaga County, New York?
- Yes. 1 venomous snake species has verified records in Onondaga County, New York, including Eastern Massasauga. Most snakes in Onondaga County, New York, however, are harmless.
- How many snake species live in Onondaga County, New York?
- 9 snake species have verified records in Onondaga County, New York, of which 1 is venomous.
- What is the most commonly seen snake in Onondaga County, New York?
- The Common Garter Snake is the most frequently reported snake in Onondaga County, New York, based on verified wildlife observations.
- What should I do if I see a venomous snake in Onondaga 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.