South Carolina
Snakes in Barnwell County
24 species have been documented here, 3 of them venomous.
Venomous snakes in Barnwell 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.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Barnwell County

Brown Watersnake
Nerodia taxispilota
Harmless

Mudsnake
Farancia abacura
Harmless

North American Racer
Coluber constrictor
Harmless

Northern Cottonmouth
Agkistrodon piscivorus
Venomous

Queensnake
Regina septemvittata
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless

Rainbow Snake
Farancia erytrogramma
Harmless

Eastern Ratsnake
Pantherophis alleghaniensis
Harmless

Rough Greensnake
Opheodrys aestivus
Harmless

Scarletsnake
Cemophora coccinea
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Banded Watersnake
Nerodia fasciata
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Timber Rattlesnake
Crotalus horridus
Venomous

Common Coachwhip
Masticophis flagellum
Harmless

Southern Hognose Snake
Heterodon simus
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

DeKay's Brownsnake
Storeria dekayi
Harmless

Red Cornsnake
Pantherophis guttatus
Harmless

Florida Green Watersnake
Nerodia floridana
Harmless

Western Ratsnake
Pantherophis obsoletus
Harmless

Smooth Earthsnake
Virginia valeriae
Harmless

Southeastern Crowned Snake
Tantilla coronata
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Barnwell County: FAQ
- Are there venomous snakes in Barnwell County, South Carolina?
- Yes. 3 venomous snake species have verified records in Barnwell County, South Carolina, including Northern Cottonmouth, Timber Rattlesnake, Eastern Copperhead. Most snakes in Barnwell County, South Carolina, however, are harmless.
- How many snake species live in Barnwell County, South Carolina?
- 20+ snake species have verified records in Barnwell County, South Carolina, of which 3 are venomous.
- What is the most commonly seen snake in Barnwell County, South Carolina?
- The Brown Watersnake is the most frequently reported snake in Barnwell County, South Carolina, based on verified wildlife observations.
- What should I do if I see a venomous snake in Barnwell County, South Carolina?
- 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.