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

Plains Garter Snake
Thamnophis radix
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

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