Kansas
Snakes in Jefferson County
21 species have been documented here, 3 of them venomous.
Venomous snakes in Jefferson 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.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Jefferson County
Common Watersnake
Nerodia sipedon
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Ring-necked Snake
Diadophis punctatus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
North American Racer
Coluber constrictor
Harmless
Western Worm Snake
Carphophis vermis
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Flat-headed Snake
Tantilla gracilis
Harmless
Tantilla selmae
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Lined Snake
Tropidoclonion lineatum
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.