Iowa
Snakes in Clayton County
7 species have been documented here, and none are venomous.
Every snake recorded in Clayton County

Western Ratsnake
Pantherophis obsoletus
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Plains Garter Snake
Thamnophis radix
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Clayton County: FAQ
- Are there venomous snakes in Clayton County, Iowa?
- No venomous snakes have verified records in Clayton County, Iowa. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Clayton County, Iowa?
- 7 snake species have verified records in Clayton County, Iowa.
- What is the most commonly seen snake in Clayton County, Iowa?
- The Western Ratsnake is the most frequently reported snake in Clayton County, Iowa, based on verified wildlife observations.