Illinois
Snakes in Winnebago County
9 species have been documented here, and none are venomous.
Every snake recorded in Winnebago County
Common Garter Snake
Thamnophis sirtalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Winnebago County: FAQ
- Are there venomous snakes in Winnebago County, Illinois?
- No venomous snakes have verified records in Winnebago County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Winnebago County, Illinois?
- 9 snake species have verified records in Winnebago County, Illinois.
- What is the most commonly seen snake in Winnebago County, Illinois?
- The Common Garter Snake is the most frequently reported snake in Winnebago County, Illinois, based on verified wildlife observations.