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

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

North American Racer
Coluber constrictor
Harmless

Western Foxsnake
Pantherophis ramspotti
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

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