Snakes in Delaware County

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

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

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ 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 Delaware County

Common Watersnake

Nerodia sipedon

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Western Ribbon Snake

Thamnophis proximus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Common Wormsnake

Carphophis amoenus

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Western Worm Snake

Carphophis vermis

Harmless

North American Racer

Coluber constrictor

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Smooth Earthsnake

Virginia valeriae

Harmless

Western Milksnake

Lampropeltis gentilis

Harmless

Eastern Kingsnake

Lampropeltis getula

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Delaware County: FAQ

Are there venomous snakes in Delaware County, Oklahoma?

Yes. 3 venomous snake species have verified records in Delaware County, Oklahoma, including Eastern Copperhead, Northern Cottonmouth, Timber Rattlesnake. Most snakes in Delaware County, Oklahoma, however, are harmless.

How many snake species live in Delaware County, Oklahoma?

20+ snake species have verified records in Delaware County, Oklahoma, of which 3 are venomous.

What is the most commonly seen snake in Delaware County, Oklahoma?

The Common Watersnake is the most frequently reported snake in Delaware County, Oklahoma, based on verified wildlife observations.

What should I do if I see a venomous snake in Delaware County, Oklahoma?

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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