Missouri
Snakes in Dallas County
8 species have been documented here, 1 of them venomous.
Venomous snakes in Dallas County
Full guide & what to do if bitten →
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Dallas County

Common Watersnake
Nerodia sipedon
Harmless

Western Ratsnake
Pantherophis obsoletus
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Western Ribbon Snake
Thamnophis proximus
Harmless

Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Dallas County: FAQ
- Are there venomous snakes in Dallas County, Missouri?
- Yes. 1 venomous snake species has verified records in Dallas County, Missouri, including Eastern Copperhead. Most snakes in Dallas County, Missouri, however, are harmless.
- How many snake species live in Dallas County, Missouri?
- 8 snake species have verified records in Dallas County, Missouri, of which 1 is venomous.
- What is the most commonly seen snake in Dallas County, Missouri?
- The Common Watersnake is the most frequently reported snake in Dallas County, Missouri, based on verified wildlife observations.
- What should I do if I see a venomous snake in Dallas County, Missouri?
- 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.