Illinois
Snakes in McHenry County
8 species have been documented here, and none are venomous.
Every snake recorded in McHenry County
Common Garter Snake
Thamnophis sirtalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.