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

Common Watersnake
Nerodia sipedon
Harmless

Plains Garter Snake
Thamnophis radix
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Eastern Foxsnake
Pantherophis vulpinus
Harmless

Smooth Greensnake
Opheodrys vernalis
Harmless

Queensnake
Regina septemvittata
Harmless

North American Racer
Coluber constrictor
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Western Ribbon Snake
Thamnophis proximus
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Kirtland's Snake
Clonophis kirtlandii
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Will County: FAQ
- Are there venomous snakes in Will County, Illinois?
- No venomous snakes have verified records in Will County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Will County, Illinois?
- 10+ snake species have verified records in Will County, Illinois.
- What is the most commonly seen snake in Will County, Illinois?
- The Common Watersnake is the most frequently reported snake in Will County, Illinois, based on verified wildlife observations.