New Jersey
Snakes in Passaic County
12 species have been documented here, 2 of them venomous.
Venomous snakes in Passaic County
Full guide & what to do if bitten →
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 Passaic County
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Eastern Ratsnake
Pantherophis alleghaniensis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
North American Racer
Coluber constrictor
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Common Wormsnake
Carphophis amoenus
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.