Texas
Snakes in Jefferson County
28 species have been documented here, 6 of them venomous.
Venomous snakes in Jefferson 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.
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.
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Broad-banded CopperheadAgkistrodon laticinctusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Jefferson County
Western Ribbon Snake
Thamnophis proximus
Harmless
Mississippi Green Watersnake
Nerodia cyclopion
Harmless
Banded Watersnake
Nerodia fasciata
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Diamondback Watersnake
Nerodia rhombifer
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Saltmarsh Snake
Nerodia clarkii
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Glossy Swampsnake
Liodytes rigida
Harmless
Rough Earthsnake
Virginia striatula
Harmless
North American Racer
Coluber constrictor
Harmless
Texas Coralsnake
Micrurus tener
Venomous
Eastern Kingsnake
Lampropeltis getula
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Pygmy Rattlesnake
Sistrurus miliarius
Venomous
Graham's Crawfish Snake
Regina grahamii
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Mudsnake
Farancia abacura
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Common Coachwhip
Masticophis flagellum
Harmless
Red Cornsnake
Pantherophis guttatus
Harmless
Broad-banded Copperhead
Agkistrodon laticinctus
Venomous
Prairie Kingsnake
Lampropeltis calligaster
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.