45 Types of Snakes in Oklahoma

Oklahoma is home to over 40 species of snakes, including both venomous and nonvenomous types. This guide covers the most common species you might encounter, key identification markers, and where to look for them. Whether you're a beginner or experienced, start with the basics of habitat and timing to improve your sightings.

T

By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 6, 2026.

5
species recorded
April, May, June
peak months

Verified species, source iNaturalist

45 types of snakes recorded in Oklahoma

45 snake species have a verified observation record in Oklahoma across snakes (suborder Serpentes), each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.

  • Western Ratsnake (Pantherophis obsoletus), a species recorded in Oklahoma1

    Western Ratsnake

    Pantherophis obsoletus

    2,036 records

    Public domain CC0

    Wikipedia
  • Plain-bellied Watersnake (Nerodia erythrogaster), a species recorded in Oklahoma2

    Plain-bellied Watersnake

    Nerodia erythrogaster

    1,855 records

    Mila Turov CC BY

    Wikipedia
  • DeKay's Brownsnake (Storeria dekayi), a species recorded in Oklahoma3

    DeKay's Brownsnake

    Storeria dekayi

    1,332 records

    Public domain CC0

    Wikipedia
  • Ring-necked Snake (Diadophis punctatus), a species recorded in Oklahoma4

    Ring-necked Snake

    Diadophis punctatus

    1,094 records

    Public domain CC0

    Wikipedia
  • Western Ribbon Snake (Thamnophis proximus), a species recorded in Oklahoma5

    Western Ribbon Snake

    Thamnophis proximus

    1,007 records

    Adam Cohen CC BY

    Wikipedia
  • Rough Greensnake (Opheodrys aestivus), a species recorded in Oklahoma6

    Rough Greensnake

    Opheodrys aestivus

    938 records

    Joseph McPhail CC BY

    Wikipedia
  • Diamondback Watersnake (Nerodia rhombifer), a species recorded in Oklahoma7

    Diamondback Watersnake

    Nerodia rhombifer

    920 records

    B. P. White CC BY-SA

    Wikipedia
  • Rough Earthsnake (Virginia striatula), a species recorded in Oklahoma8

    Rough Earthsnake

    Virginia striatula

    867 records

    Rich Sommer CC BY

    Wikipedia
  • Northern Cottonmouth (Agkistrodon piscivorus), a species recorded in Oklahoma9

    Northern Cottonmouth

    Agkistrodon piscivorus

    652 records

    kirk gardner CC BY

    Wikipedia
  • North American Racer (Coluber constrictor), a species recorded in Oklahoma10

    North American Racer

    Coluber constrictor

    588 records

    Peter Brastow CC BY

    Wikipedia
  • Common Garter Snake (Thamnophis sirtalis), a species recorded in Oklahoma11

    Common Garter Snake

    Thamnophis sirtalis

    569 records

    kclarksdnhmorg CC BY

    Wikipedia
  • Broad-banded Copperhead (Agkistrodon laticinctus), a species recorded in Oklahoma12

    Broad-banded Copperhead

    Agkistrodon laticinctus

    498 records

    Meghan Cassidy CC BY-SA

    Wikipedia

Also recorded in Oklahoma

#SpeciesRecords
13Speckled KingsnakeLampropeltis holbrooki485
14Common CoachwhipMasticophis flagellum458
15Gopher SnakePituophis catenifer429
16Lined SnakeTropidoclonion lineatum422
17Prairie KingsnakeLampropeltis calligaster386
18Timber RattlesnakeCrotalus horridus363
19Western Diamond-backed RattlesnakeCrotalus atrox332
20Pygmy RattlesnakeSistrurus miliarius289
21Eastern CopperheadAgkistrodon contortrix288
22Eastern Hognose SnakeHeterodon platirhinos286
23Flat-headed SnakeTantilla gracilis204
24Common WatersnakeNerodia sipedon190
25Graham's Crawfish SnakeRegina grahamii178
26Western MassasaugaSistrurus tergeminus170
27Great Plains Ground SnakeSonora episcopa170
28Prairie RattlesnakeCrotalus viridis125
29Western MilksnakeLampropeltis gentilis115
30Banded WatersnakeNerodia fasciata107
31Great Plains RatsnakePantherophis emoryi105
32Checkered Garter SnakeThamnophis marcianus95
33Western Worm SnakeCarphophis vermis94
34Plains Hognose SnakeHeterodon nasicus62
35Texas Blind SnakeRena dulcis62
36Glossy SnakeArizona elegans59
37MudsnakeFarancia abacura42
38Chihuahuan NightsnakeHypsiglena jani40
39Smooth EarthsnakeVirginia valeriae36
40Red-bellied SnakeStoreria occipitomaculata35
41Plains Black-headed SnakeTantilla nigriceps27
42Plains Garter SnakeThamnophis radix26
43Long-nosed SnakeRhinocheilus lecontei22
44ScarletsnakeCemophora coccinea14
45Glossy SwampsnakeLiodytes rigida10

Plus 2 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations. Photos by iNaturalist observers, reused under the licence each observer chose.

Real sighting data, source iNaturalist

27,692 verified observations on iNaturalist of snake have been recorded in Oklahoma, most often in April, May, June.

Oklahoma is home to over 40 species of snakes, including both venomous and nonvenomous types. This guide covers the most common species you might encounter, key identification markers, and where to look for them. Whether you're a beginner or experienced, start with the basics of habitat and timing to improve your sightings.

What are the most common types of snakes in Oklahoma?

The most frequently seen snakes in Oklahoma include the western ratsnake, plains garter snake, prairie kingsnake, and the venomous copperhead and timber rattlesnake. In the eastern forests, you'll often find red-sided garter snakes and rough greensnakes, while the open prairies are home to bullsnakes and western diamondback rattlesnakes. Check our /animals/snake page for detailed profiles of each species.

See ourstate wildlife pagefor the next step.

Where in Oklahoma should I look to spot snakes?

Your best bet is to focus on rocky outcrops, brushy edges near water, and open grasslands with rodent activity. Eastern Oklahoma's oak-hickory forests are excellent for timber rattlesnakes and copperheads. In the west, focus on rocky canyons and prairie dog towns for prairie rattlesnakes and bullsnakes. The /wildlife/oklahoma page has region-specific tips.

See ourSnakes guidefor the next step.

What is the best season for seeing snakes in Oklahoma?

Spring (April to early June) and fall (September to October) are prime times. Snakes are most active in the early morning and late afternoon when temperatures are moderate. Summer heat drives them into shaded cover or nocturnal activity, so early morning hikes are best. Hot summer afternoons are poor for spotting.

See ourstate animal guidefor the next step.

How can I tell if a snake is venomous in Oklahoma?

Oklahoma's venomous snakes are all pit vipers: rattlesnakes, copperheads, and cottonmouths. Key field marks: a broad triangular head, a heat-sensing pit between the eye and nostril, and vertically elliptical pupils. Nonvenomous snakes usually have round heads and round pupils. Always keep a safe distance and never rely solely on head shape (some harmless species can flatten their heads).

What nonvenomous snakes look like venomous ones in Oklahoma?

The most common lookalike is the gopher snake (bullsnake) confusing people with the western diamondback. Gopher snakes have round pupils and a narrow head, while diamondbacks have a thick head and pit. Another is the harmless watersnake versus the cottonmouth: watersnakes have banded patterns but lack the pit and have round pupils. Check our /animals/snake page for side-by-side comparisons.

How do you identify a timber rattlesnake vs a gopher snake?

Timber rattlesnakes have a dark chevron pattern on a yellow or gray background, a broad head, and a rattle. Gopher snakes have a blotched pattern on a lighter background, a narrow head, and no rattle (they may hiss and vibrate their tail, but it sounds different). Also, timber rattlesnakes are heavy-bodied and usually under 5 feet, while gopher snakes can exceed 6 feet and are more slender. Always use multiple signs.

What gear or clothing helps you watch snakes safely?

Long pants and sturdy boots give you peace of mind when walking through snake habitat. A pair of binoculars lets you identify snakes from a safe distance, especially in rocky areas. If you want to show off your interest, consider a snake-themed shirt from our collection:

Rattlesnake Graphic T-Shirt

A bold design featuring a classic rattlesnake graphic, perfect for field trips or casual wear.Check Price and Availability

Green Viper Snake T-Shirt

Showcases a striking green viper, ideal for snake enthusiasts.Check Price and Availability

Snake T-Shirt

A minimalist snake graphic that works for everyday wear while showing your interest.Check Price and Availability

Browse more designs on our /t-shirts page.

See ourCompare wildlife shirtsfor the next step.

Retro Cute Snake T-Shirt

A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability

Frequently Asked Questions about Oklahoma snakes

**Are there water moccasins in Oklahoma?** Yes, cottonmouths (water moccasins) are found in southeastern Oklahoma's swamps and slow-moving streams. They have a thick body and a white mouth lining.

**What is the largest snake in Oklahoma?** The bullsnake (gopher snake) can reach over 8 feet, but the heaviest is the timber rattlesnake, which can weigh up to 10 pounds.

**Do Oklahoma snakes hibernate?** They brumate during cold months, often in rock crevices or rodent burrows. You might see them on warm winter days.

**How many rattlesnake species live in Oklahoma?** Four: the timber rattlesnake, western diamondback, prairie rattlesnake, and massasauga. See /animals/snake for range maps.

See ourtour planning ideasfor the next step.

Gear and field guides

Frequently asked questions

What are the most common types of snakes in Oklahoma?+

The most frequently seen snakes in Oklahoma include the western ratsnake, plains garter snake, prairie kingsnake, and the venomous copperhead and timber rattlesnake. In the eastern forests, you'll often find red-sided garter snakes and rough greensnakes, while the open prairies are home to bullsnakes and western diamondback rattlesnakes. Check our /animals/snake page for detailed profiles of each species. See ourstate wildlife pagefor the next step.

Where in Oklahoma should I look to spot snakes?+

Your best bet is to focus on rocky outcrops, brushy edges near water, and open grasslands with rodent activity. Eastern Oklahoma's oak-hickory forests are excellent for timber rattlesnakes and copperheads. In the west, focus on rocky canyons and prairie dog towns for prairie rattlesnakes and bullsnakes. The /wildlife/oklahoma page has region-specific tips. See ourSnakes guidefor the next step.

What is the best season for seeing snakes in Oklahoma?+

Spring (April to early June) and fall (September to October) are prime times. Snakes are most active in the early morning and late afternoon when temperatures are moderate. Summer heat drives them into shaded cover or nocturnal activity, so early morning hikes are best. Hot summer afternoons are poor for spotting. See ourstate animal guidefor the next step.

How can I tell if a snake is venomous in Oklahoma?+

Oklahoma's venomous snakes are all pit vipers: rattlesnakes, copperheads, and cottonmouths. Key field marks: a broad triangular head, a heat-sensing pit between the eye and nostril, and vertically elliptical pupils. Nonvenomous snakes usually have round heads and round pupils. Always keep a safe distance and never rely solely on head shape (some harmless species can flatten their heads).

What nonvenomous snakes look like venomous ones in Oklahoma?+

The most common lookalike is the gopher snake (bullsnake) confusing people with the western diamondback. Gopher snakes have round pupils and a narrow head, while diamondbacks have a thick head and pit. Another is the harmless watersnake versus the cottonmouth: watersnakes have banded patterns but lack the pit and have round pupils. Check our /animals/snake page for side-by-side comparisons.

How do you identify a timber rattlesnake vs a gopher snake?+

Timber rattlesnakes have a dark chevron pattern on a yellow or gray background, a broad head, and a rattle. Gopher snakes have a blotched pattern on a lighter background, a narrow head, and no rattle (they may hiss and vibrate their tail, but it sounds different). Also, timber rattlesnakes are heavy-bodied and usually under 5 feet, while gopher snakes can exceed 6 feet and are more slender. Always use multiple signs.

What gear or clothing helps you watch snakes safely?+

Long pants and sturdy boots give you peace of mind when walking through snake habitat. A pair of binoculars lets you identify snakes from a safe distance, especially in rocky areas. If you want to show off your interest, consider a snake-themed shirt from our collection: ### Rattlesnake Graphic T-Shirt A bold design featuring a classic rattlesnake graphic, perfect for field trips or casual wear.Check Price and Availability ### Green Viper Snake T-Shirt Showcases a striking green viper, ideal for snake enthusiasts.Check Price and Availability ### Snake T-Shirt A minimalist snake graphic that works for everyday wear while showing your interest.Check Price and Availability Browse more designs on our /t-shirts page. See ourCompare wildlife shirtsfor the next step. ### Retro Cute Snake T-Shirt A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability