Illinois
Snakes in Lake Michigan County
8 species have been documented here, and none are venomous.
Every snake recorded in Lake Michigan County

Common Garter Snake
Thamnophis sirtalis
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Plains Garter Snake
Thamnophis radix
Harmless

Common Watersnake
Nerodia sipedon
Harmless

North American Racer
Coluber constrictor
Harmless

Smooth Greensnake
Opheodrys vernalis
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

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