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

Common Watersnake
Nerodia sipedon
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Prairie Kingsnake
Lampropeltis calligaster
Harmless

North American Racer
Coluber constrictor
Harmless

Gray Ratsnake
Pantherophis spiloides
Harmless

Graham's Crawfish Snake
Regina grahamii
Harmless

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