Nebraska
Snakes in Sioux County
7 species have been documented here, 1 of them venomous.
Venomous snakes in Sioux County
Full guide & what to do if bitten →
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Sioux County

Plains Garter Snake
Thamnophis radix
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

North American Racer
Coluber constrictor
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Plains Hognose Snake
Heterodon nasicus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Sioux County: FAQ
- Are there venomous snakes in Sioux County, Nebraska?
- Yes. 1 venomous snake species has verified records in Sioux County, Nebraska, including Prairie Rattlesnake. Most snakes in Sioux County, Nebraska, however, are harmless.
- How many snake species live in Sioux County, Nebraska?
- 7 snake species have verified records in Sioux County, Nebraska, of which 1 is venomous.
- What is the most commonly seen snake in Sioux County, Nebraska?
- The Plains Garter Snake is the most frequently reported snake in Sioux County, Nebraska, based on verified wildlife observations.
- What should I do if I see a venomous snake in Sioux County, Nebraska?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.