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

DeKay's Brownsnake
Storeria dekayi
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Eastern Foxsnake
Pantherophis vulpinus
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Plains Garter Snake
Thamnophis radix
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Boone County: FAQ
- Are there venomous snakes in Boone County, Illinois?
- No venomous snakes have verified records in Boone County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Boone County, Illinois?
- 6 snake species have verified records in Boone County, Illinois.
- What is the most commonly seen snake in Boone County, Illinois?
- The DeKay's Brownsnake is the most frequently reported snake in Boone County, Illinois, based on verified wildlife observations.