Missouri
Snakes in Miller County
11 species have been documented here, 2 of them venomous.
Venomous snakes in Miller County
Full guide & what to do if bitten →
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Miller County

Western Ribbon Snake
Thamnophis proximus
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Northern Cottonmouth
Agkistrodon piscivorus
Venomous

Smooth Earthsnake
Virginia valeriae
Harmless

Flat-headed Snake
Tantilla gracilis
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

North American Racer
Coluber constrictor
Harmless

Western Ratsnake
Pantherophis obsoletus
Harmless

Rough Earthsnake
Virginia striatula
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Miller County: FAQ
- Are there venomous snakes in Miller County, Missouri?
- Yes. 2 venomous snake species have verified records in Miller County, Missouri, including Northern Cottonmouth, Eastern Copperhead. Most snakes in Miller County, Missouri, however, are harmless.
- How many snake species live in Miller County, Missouri?
- 11 snake species have verified records in Miller County, Missouri, of which 2 are venomous.
- What is the most commonly seen snake in Miller County, Missouri?
- The Western Ribbon Snake is the most frequently reported snake in Miller County, Missouri, based on verified wildlife observations.
- What should I do if I see a venomous snake in Miller 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.