Illinois
Snakes in Clinton County
7 species have been documented here, and none are venomous.
Every snake recorded in Clinton County

Common Garter Snake
Thamnophis sirtalis
Harmless

North American Racer
Coluber constrictor
Harmless

Prairie Kingsnake
Lampropeltis calligaster
Harmless

Gray Ratsnake
Pantherophis spiloides
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Clinton County: FAQ
- Are there venomous snakes in Clinton County, Illinois?
- No venomous snakes have verified records in Clinton County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Clinton County, Illinois?
- 7 snake species have verified records in Clinton County, Illinois.
- What is the most commonly seen snake in Clinton County, Illinois?
- The Common Garter Snake is the most frequently reported snake in Clinton County, Illinois, based on verified wildlife observations.