Illinois
Snakes in Rock Island County
10 species have been documented here, and none are venomous.
Every snake recorded in Rock Island County
Plains Garter Snake
Thamnophis radix
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Gopher Snake
Pituophis catenifer
Harmless
North American Racer
Coluber constrictor
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Rock Island County: FAQ
- Are there venomous snakes in Rock Island County, Illinois?
- No venomous snakes have verified records in Rock Island County, Illinois. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Rock Island County, Illinois?
- 10 snake species have verified records in Rock Island County, Illinois.
- What is the most commonly seen snake in Rock Island County, Illinois?
- The Plains Garter Snake is the most frequently reported snake in Rock Island County, Illinois, based on verified wildlife observations.