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

Eastern Milksnake
Lampropeltis triangulum
Harmless

North American Racer
Coluber constrictor
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Gopher Snake
Pituophis catenifer
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

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