Delaware
Snakes in New Castle County
16 species have been documented here, 1 of them venomous.
Venomous snakes in New Castle 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.
Every snake recorded in New Castle County
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Ratsnake
Pantherophis alleghaniensis
Harmless
North American Racer
Coluber constrictor
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Queensnake
Regina septemvittata
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Rough Greensnake
Opheodrys aestivus
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Common Ribbon Snake
Thamnophis saurita
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.