Texas
Snakes in Marion County
23 species have been documented here, 5 of them venomous.
Venomous snakes in Marion 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.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Texas CoralsnakeMicrurus tenerVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Pygmy RattlesnakeSistrurus miliariusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Marion County

Northern Cottonmouth
Agkistrodon piscivorus
Venomous

Western Ratsnake
Pantherophis obsoletus
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless

Western Ribbon Snake
Thamnophis proximus
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

North American Racer
Coluber constrictor
Harmless

Rough Greensnake
Opheodrys aestivus
Harmless

Common Coachwhip
Masticophis flagellum
Harmless

Diamondback Watersnake
Nerodia rhombifer
Harmless

Western Milksnake
Lampropeltis gentilis
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Timber Rattlesnake
Crotalus horridus
Venomous

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Prairie Kingsnake
Lampropeltis calligaster
Harmless

Mississippi Green Watersnake
Nerodia cyclopion
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Speckled Kingsnake
Lampropeltis holbrooki
Harmless

Texas Coralsnake
Micrurus tener
Venomous

Scarletsnake
Cemophora coccinea
Harmless

Mudsnake
Farancia abacura
Harmless

Banded Watersnake
Nerodia fasciata
Harmless

Rough Earthsnake
Virginia striatula
Harmless

Pygmy Rattlesnake
Sistrurus miliarius
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Marion County: FAQ
- Are there venomous snakes in Marion County, Texas?
- Yes. 5 venomous snake species have verified records in Marion County, Texas, including Northern Cottonmouth, Eastern Copperhead, Timber Rattlesnake, Texas Coralsnake. Most snakes in Marion County, Texas, however, are harmless.
- How many snake species live in Marion County, Texas?
- 20+ snake species have verified records in Marion County, Texas, of which 5 are venomous.
- What is the most commonly seen snake in Marion County, Texas?
- The Northern Cottonmouth is the most frequently reported snake in Marion County, Texas, based on verified wildlife observations.
- What should I do if I see a venomous snake in Marion County, Texas?
- 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.