Pennsylvania
Snakes in Lehigh County
9 species have been documented here, 2 of them venomous.
Venomous snakes in Lehigh 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 Lehigh County

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Timber Rattlesnake
Crotalus horridus
Venomous

Eastern Milksnake
Lampropeltis triangulum
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Lehigh County: FAQ
- Are there venomous snakes in Lehigh County, Pennsylvania?
- Yes. 2 venomous snake species have verified records in Lehigh County, Pennsylvania, including Timber Rattlesnake, Eastern Copperhead. Most snakes in Lehigh County, Pennsylvania, however, are harmless.
- How many snake species live in Lehigh County, Pennsylvania?
- 9 snake species have verified records in Lehigh County, Pennsylvania, of which 2 are venomous.
- What is the most commonly seen snake in Lehigh County, Pennsylvania?
- The Common Garter Snake is the most frequently reported snake in Lehigh County, Pennsylvania, based on verified wildlife observations.
- What should I do if I see a venomous snake in Lehigh County, Pennsylvania?
- 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.