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

Common Garter Snake
Thamnophis sirtalis
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Butler's Garter Snake
Thamnophis butleri
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Waukesha County: FAQ
- Are there venomous snakes in Waukesha County, Wisconsin?
- No venomous snakes have verified records in Waukesha County, Wisconsin. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Waukesha County, Wisconsin?
- 8 snake species have verified records in Waukesha County, Wisconsin.
- What is the most commonly seen snake in Waukesha County, Wisconsin?
- The Common Garter Snake is the most frequently reported snake in Waukesha County, Wisconsin, based on verified wildlife observations.