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

Gray Ratsnake
Pantherophis spiloides
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

North American Racer
Coluber constrictor
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Eastern Foxsnake
Pantherophis vulpinus
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Prairie Kingsnake
Lampropeltis calligaster
Harmless

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