Illinois
Snakes in Marion County
5 species have been documented here, and none are venomous.
Every snake recorded in Marion County
Gray Ratsnake
Pantherophis spiloides
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Marion County: FAQ
- Are there venomous snakes in Marion County, Illinois?
- No venomous snakes have verified records in Marion County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Marion County, Illinois?
- 5 snake species have verified records in Marion County, Illinois.
- What is the most commonly seen snake in Marion County, Illinois?
- The Gray Ratsnake is the most frequently reported snake in Marion County, Illinois, based on verified wildlife observations.