Snakes in Jersey County

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

• 
  Timber Rattlesnake

  Crotalus horridus

  ▲ Venomous

  Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.

Every snake recorded in Jersey County

Common Wormsnake

Carphophis amoenus

Harmless

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Gray Ratsnake

Pantherophis spiloides

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Eastern Milksnake

Lampropeltis triangulum

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

Common Watersnake

Nerodia sipedon

Harmless

North American Racer

Coluber constrictor

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

DeKay's Brownsnake

Storeria dekayi

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Western Ribbon Snake

Thamnophis proximus

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Jersey County: FAQ

Are there venomous snakes in Jersey County, Illinois?

Yes. 2 venomous snake species have verified records in Jersey County, Illinois, including Eastern Copperhead, Timber Rattlesnake. Most snakes in Jersey County, Illinois, however, are harmless.

How many snake species live in Jersey County, Illinois?

10+ snake species have verified records in Jersey County, Illinois, of which 2 are venomous.

What is the most commonly seen snake in Jersey County, Illinois?

The Common Wormsnake is the most frequently reported snake in Jersey County, Illinois, based on verified wildlife observations.

What should I do if I see a venomous snake in Jersey County, Illinois?

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.

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