States Wildlife

Are there copperheads in Ohio?

Last checked November 3, 2026 against official sources.

On this page
  1. The answer
  2. More official answers
  3. Which ones
  4. Where in the US
  5. Lookalikes
  6. Official advice
  7. Sources

Yes.

ODNR: copperheads are widely scattered through most of unglaciated Ohio, especially the rocky, wooded hillsides of southeastern Ohio. ODNR status: uncommon.

Ohio Department of Natural Resources, Division of Wildlife: “Copperheads are widely scattered throughout most of unglaciated Ohio.” Source

How we answer questions

On Ohio's official list

Eastern Copperhead
Photo: USFWSmidwest · Public domain · Wikimedia Commons

Eastern Copperhead

Agkistrodon contortrix

Venomous per Ohio Department of Natural Resources, Division of Wildlife

Danger to people
“Because the amount of venom injected during a bite is not enough to seriously hurt a healthy adult, the bite is rarely fatal …” Ohio Department of Natural Resources, Division of Wildlife
Size
Adults usually about 2 to 3 feet (24-36 in); record about 53 inches.
How to recognize it
  • Vertical (cat-like) pupils and a heat-sensing pit between eye and nostril
  • Heavy-bodied; keeled scales
  • Head shape alone is not a reliable way to identify copperheads
Where in Ohio
Copperheads are widely scattered throughout most of unglaciated Ohio … Ohio Department of Natural Resources, Division of Wildlife
What the sources say

Venom: “Copperheads have the dubious distinction of having bitten more people in the United States than any other venomous snake … Ohio has only three species of venomous snakes, two of which have rattles at the end of the tail.” (Ohio Department of Natural Resources, Division of Wildlife)

Range: Copperheads are widely scattered throughout most of unglaciated Ohio. Although they occupy a variety of habitats from floodplains to ridge tops, they show a marked preference for the rocky, wooded hillsides of southeastern Ohio.

Habitat: Copperheads are widely scattered throughout most of unglaciated Ohio. Although they occupy a variety of habitats from floodplains to ridge tops, they show a marked preference for the rocky, wooded hillsides of southeastern Ohio. They are not as averse to civilization as the timber rattlesnake, but copper- heads tend to stay away from well-settled areas. (Ohio Department of Natural Resources, Division of Wildlife)

Full Eastern Copperhead guide

All snakes in the state: Ohio snakes.

Where the copperhead lives in the US

Texas: on the state's official listKentucky: on the state's official listGeorgia: on the state's official listMissouri: on the state's official listVirginia: on the state's official listTennessee: on the state's official listLouisiana: on the state's official listNew York: on the state's official listFlorida: on the state's official listIllinois: on the state's official listMaryland: on the state's official listIowa: on the state's official listOhio: on the state's official listNebraska: on the state's official listArkansas: on the state's official listNorth Carolina: on the state's official listOklahoma: on the state's official listWest Virginia: on the state's official listIndiana: on the state's official listMassachusetts: on the state's official listPennsylvania: on the state's official listSouth Carolina: on the state's official listConnecticut: on the state's official listDelaware: on the state's official listAlabama: on the state's official listKansas: on the state's official listNew Jersey: on an official source
Official presence. 27 states where a state list or official source names it. Gray means no official record in our data, not that it is absent.
  • Native or listed
  • Nonnative or not established
  • No official record in our data
Texas: 248 recordsKentucky: 83 recordsGeorgia: 81 recordsMissouri: 48 recordsVirginia: 152 recordsTennessee: 103 recordsLouisiana: 50 recordsNew York: 228 recordsFlorida: 7 recordsIllinois: 31 recordsMaryland: 52 recordsOhio: 12 recordsNebraska: 31 recordsArkansas: 89 recordsMississippi: 13 recordsNorth Carolina: 277 recordsOklahoma: 9 recordsWest Virginia: 9 recordsIndiana: 6 recordsMassachusetts: 1 recordPennsylvania: 22 recordsSouth Carolina: 56 recordsConnecticut: 7 recordsAlabama: 39 recordsKansas: 98 recordsNew Jersey: 7 records
Observation records. Open-licence records on GBIF in 26 states. Records are sightings people shared, not confirmation that a population lives there.
  • 1–9
  • 10–99
  • 100–999
  • 1,000+

Copperhead: identification, range and danger

What else it could be

  • Cottonmouth (water moccasin)
    Photo: Geoff Gallice from Gainesville · CC BY 2.0 · Wikimedia Commons

    Cottonmouth (water moccasin)

    Also venomous. Juvenile cottonmouths have many dark spots and speckles inside their dark crossbands (copperhead bands have none or at most one). The Florida Museum says adult Florida cottonmouths are typically uniformly dark, but SCDNR says cottonmouth color ranges from dark brown and black to olive drab and yellow-tan, so a pale snake is not ruled out. The copperhead's eye is not obscured by the dark facial band typical of the cottonmouth. Cottonmouths are almost always associated with wetlands.

  • Northern water snake
    Photo: U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons

    Northern water snake

    Its dark bands form a 'reverse hourglass': wider across the back and narrower on the sides (the copperhead's are narrow on the back, wide on the sides). Older water snakes can look solid dark.

  • Southern and midland watersnakes
    Photo: Scott Loarie · CC0 1.0 · iNaturalist

    Southern and midland watersnakes

    Florida Museum, for Florida: crossbands (in the Southern Watersnake, on juveniles) are darker, narrower and much more numerous than a copperhead's; pupils are round; dark vertical lines on the sides of the face near the mouth, which copperheads lack. Large adults are typically uniformly dark brown or black.

  • Eastern milk snake
    Photo: Tom Norton · CC BY 4.0 · iNaturalist

    Eastern milk snake

    Milk snake blotches are outlined in black and widest across the middle of the back; belly is a black-and-white checkerboard (copperhead belly is mottled white to gray).

  • Corn snake
    Photo: Bea Leiderman · CC BY 4.0 · iNaturalist

    Corn snake

    Longer and slender with smooth, shiny scales, an elongated head and square, black-outlined blotches; more red, orange and yellow.

When snakes are seen in Ohio

3,292 records (GBIF, CC0 and CC BY).

What official sources advise

Other questions about Ohio

Sources

  1. Reptiles of Ohio Field Guide (Publication 5354). Ohio Department of Natural Resources, Division of Wildlife. PUBLICATION 5354; checked November 3, 2026.
    Quoted passages (7)
    “Copperheads are widely scattered throughout most of unglaciated Ohio.”
    “Copperheads have the dubious distinction of having bitten more people in the United States than any other venomous snake … Ohio has only three species of venomous snakes, two of which have rattles at the end of the tail.”
    “Because the amount of venom injected during a bite is not enough to seriously hurt a healthy adult, the bite is rarely fatal. However, it is extremely painful, and, like a honeybee sting, has the potential to produce a life-threatening allergic reaction.”
    “Gray ratsnakes often hibernate in rock crevices in the company of other snakes, such as copperheads and rattlesnakes.”
    “Ohio has only three species of venomous snakes, two of which have rattles at the end of the tail. The third species is the Northern copper-head.”
    “Remnant colonies persist in widely scattered areas in southern unglaciated Ohio.”
    “Water moccasins are not native to Ohio.”
  2. NAS collection info: Burmese python, Ohio. U.S. Geological Survey. database queried November 3, 2026; checked November 3, 2026.
  3. GBIF.org occurrence records, human observations licensed CC0 1.0 or CC BY 4.0 only, accessed November 3, 2026. The datasets behind these counts are listed on our Sources page.