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

Common Garter Snake
Thamnophis sirtalis
Harmless

Eastern Foxsnake
Pantherophis vulpinus
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

North American Racer
Coluber constrictor
Harmless

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