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Snakes in Arkansas

Arkansas has 36 snake species on record, each with at least 10 GBIF records in the state, and 5,262 licensed records in all. The most recorded are the diamondback water snake, the plain-bellied watersnake and the ring-necked snake. Five of them are venomous.

36snake species listed
5venomous
14thof 50 states by species count
Maybusiest month, observations
Bitten in Arkansas? Call 911 for a venomous snakebite or any bite with trouble breathing. For advice on any bite or sting, call Poison Help at 1-800-222-1222 (free, 24/7, U.S.-wide). Do not cut the wound, suck out venom or use a tourniquet. General information, not medical advice. Do not handle or try to identify a snake or spider by this page; if unsure, treat it as venomous.

Rattlesnakes in Arkansas

Rattlesnakes are a small part of the snake record here: three species with 1% of records between them. The most recorded is the timber rattlesnake (46), ahead of the pygmy rattlesnake (11).

Observation records of the timber rattlesnake in Arkansas run mostly April through October, peaking in June; most licensed records come from Columbia County, Polk County and Crawford County.

Copperheads and cottonmouths in Arkansas

Copperheads and cottonmouths: two species are listed for Arkansas, with 320 records (6% of the state's snake records). The most recorded is the northern cottonmouth (190), ahead of the eastern copperhead (130).

Observation records of the northern cottonmouth in Arkansas run mostly March through October, peaking in April; most licensed records come from Pike County, Columbia County and Monroe County. Observation records of the eastern copperhead in Arkansas run mostly April through September, peaking in April; most licensed records come from Columbia County, Polk County and Washington County.

Water snakes and swamp snakes in Arkansas

Water snakes and swamp snakes dominate the snake record of Arkansas: nine species and 68% of all records. The most recorded is the diamondback water snake (3,056), ahead of the plain-bellied watersnake (238).

Observation records of the diamondback water snake in Arkansas run mostly March through October, peaking in May; most licensed records come from Lonoke County, Columbia County and Pulaski County. Observation records of the plain-bellied watersnake in Arkansas run mostly March through October, peaking in May; most licensed records come from Lonoke County, Greene County and Columbia County. Observation records of the southern watersnake in Arkansas run mostly March through October, peaking in May; most licensed records come from Lonoke County, Columbia County and Pulaski County.

Garter snakes and ribbon snakes in Arkansas

Garter snakes and ribbon snakes: two species are listed for Arkansas, with 178 records (3% of the state's snake records). The most recorded is the western ribbon snake (95), ahead of the common garter snake (83).

Observation records of the western ribbon snake in Arkansas run mostly March through October, peaking in June; most licensed records come from Washington County, Clay County and Columbia County. Observation records of the common garter snake in Arkansas run mostly March through November, peaking in March; most licensed records come from Washington County, Benton County and Clay County.

Rat snakes and corn snakes in Arkansas

Rat snakes and corn snakes are a small part of the snake record here: three species with 3% of records between them. The most recorded is the western rat snake (144), ahead of the Great Plains rat snake (8).

Observation records of the western rat snake in Arkansas run mostly April through October, peaking in May; most licensed records come from Washington County, Columbia County and Benton County.

Kingsnakes and milksnakes in Arkansas

Kingsnakes and milksnakes: four species are listed for Arkansas, with 199 records (4% of the state's snake records). The most recorded is the speckled kingsnake (122), ahead of the prairie kingsnake (42).

Observation records of the speckled kingsnake in Arkansas run mostly March through July, peaking in May; most licensed records come from Sebastian County, Washington County and Pulaski County. Observation records of the prairie kingsnake in Arkansas run mostly April through June, peaking in May; most licensed records come from Columbia County, Benton County and Pulaski County.

Racers, whipsnakes and indigo snakes in Arkansas

Racers, whipsnakes and indigo snakes are a small part of the snake record here: two species with 2% of records between them. The most recorded is the eastern racer (113), ahead of the coachwhip (16).

Observation records of the eastern racer in Arkansas run mostly March through August, peaking in May; most licensed records come from Monroe County, Polk County and Pulaski County.

Hognose snakes in Arkansas

One species of this group is listed for Arkansas: the eastern hog-nosed snake, with 24 records (0.5% of the state's snake records).

Green snakes in Arkansas

One species of this group is listed for Arkansas: the rough greensnake, with 97 records (2% of the state's snake records).

Observation records of the rough greensnake in Arkansas run mostly April through October, peaking in April; most licensed records come from Columbia County, Monroe County and Sebastian County.

Small woodland and burrowing snakes in Arkansas

Small woodland and burrowing snakes: nine species are listed for Arkansas, with 512 records (10% of the state's snake records). The most recorded is the ring-necked snake (212), ahead of the DeKay's brown snake (79).

Observation records of the ring-necked snake in Arkansas run mostly March through September, peaking in April; most licensed records come from Polk County, Montgomery County and Washington County. Observation records of the DeKay's brown snake in Arkansas run mostly February through October, peaking in April; most licensed records come from Washington County, Columbia County and Benton County. Most licensed records of the western worm snake in Arkansas come from Polk County, Washington County and Montgomery County.

Where in Arkansas are snakes recorded most?

Lonoke County dominates: 60% of the state's licensed snake records come from it alone, and the top five counties hold 75%. 68 of Arkansas's 75 counties have at least one licensed snake record.

#CountyRecordsShare
1Lonoke County3,17760.4%
2Columbia County2344.4%
3Washington County2104.0%
4Polk County2053.9%
5Pulaski County1282.4%
6Benton County1122.1%
7Sebastian County981.9%
8Montgomery County781.5%
9Greene County761.4%
10Pike County571.1%
11Monroe County541.0%
12Baxter County531.0%
Source: GBIF licensed records by county (GADM level 2), read 2026-09-29. Counties with many records often have active naturalists or a museum nearby.

When do snakes come out in Arkansas?

Observation records of snakes in Arkansas run mostly March through October, peaking in May with 27% of them. Winter (December to February) holds 3% of the records. The sharpest rise comes from March to April.

January: 9 observation records (1%)JanFebruary: 28 observation records (2%)FebMarch: 108 observation records (8%)Mar8%April: 233 observation records (18%)Apr18%May: 350 observation records (27%)May27%June: 201 observation records (16%)Jun16%July: 86 observation records (7%)Jul7%August: 65 observation records (5%)AugSeptember: 73 observation records (6%)SepOctober: 93 observation records (7%)Oct7%November: 41 observation records (3%)NovDecember: 6 observation records (0%)Dec
JanFebMarAprMayJunJulAugSepOctNovDec
1%2%8%18%27%16%7%5%6%7%3%0%

Snakes: Arkansas compared with its neighbors

Arkansas ranks 14th of 50 states by the number of snake species listed, level with Missouri; Texas leads with 86 species.

Of the six states bordering Arkansas, Texas, Oklahoma, Louisiana and Mississippi list more snake species; Missouri lists as many (Arkansas: 36 species; Texas 86, Oklahoma 50, Louisiana 41, Mississippi 38, Missouri 36, Tennessee 32).

What snakes are in Arkansas? All 36 species

Ranked by licensed records in Arkansas. Species with a profile page are linked.

#SpeciesFamilyRecordsShare
1Diamondback water snake
Nerodia rhombifer
Colubridae3,05658.1%
2Plain-bellied watersnake
Nerodia erythrogaster
Colubridae2384.5%
3Ring-necked snake
Diadophis punctatus
Colubridae2124.0%
4Northern cottonmouth venomous
Agkistrodon piscivorus
Viperidae1903.6%
5Western rat snake
Pantherophis obsoletus
Colubridae1442.7%
6Eastern copperhead venomous
Agkistrodon contortrix
Viperidae1302.5%
7Southern watersnake
Nerodia fasciata
Colubridae1302.5%
8Speckled kingsnake
Lampropeltis holbrooki
Colubridae1222.3%
9Eastern racer
Coluber constrictor
Colubridae1132.1%
10Northern water snake
Nerodia sipedon
Colubridae1021.9%
11Rough greensnake
Opheodrys aestivus
Colubridae971.8%
12Western ribbon snake
Thamnophis proximus
Colubridae951.8%
13Common garter snake
Thamnophis sirtalis
Colubridae831.6%
14DeKay's brown snake
Storeria dekayi
Colubridae791.5%
15Western worm snake
Carphophis vermis
Colubridae480.9%
16Timber rattlesnake venomous
Crotalus horridus
Viperidae460.9%
17Rough earthsnake
Haldea striatula
Colubridae440.8%
18Prairie kingsnake
Lampropeltis calligaster
Colubridae420.8%
19Red-bellied snake
Storeria occipitomaculata
Colubridae370.7%
20Flathead snake
Tantilla gracilis
Colubridae340.6%
21Smooth earth snake
Virginia valeriae
Colubridae320.6%
22Eastern hog-nosed snake
Heterodon platirhinos
Colubridae240.5%
23Eastern milksnake
Lampropeltis triangulum
Colubridae210.4%
24Eastern wormsnake
Carphophis amoenus
Colubridae180.3%
25Mud snake
Farancia abacura
Colubridae180.3%
26Coachwhip
Masticophis flagellum
Colubridae160.3%
27Central plains milksnake
Lampropeltis gentilis
Colubridae140.3%
28Green water snake
Nerodia cyclopion
Colubridae120.2%
29Pygmy rattlesnake venomous
Sistrurus miliarius
Viperidae110.2%
30Great Plains rat snake
Pantherophis emoryi
Colubridae80.2%
31Scarlet snake
Cemophora coccinea
Colubridae80.2%
32Western diamondback rattlesnake venomous
Crotalus atrox
Viperidae80.2%
33Graham's crayfish snake
Regina grahamii
Colubridae40.1%
34Crayfish snake
Liodytes rigida
Colubridae30.1%
35Queen snake
Regina septemvittata
Colubridae10.0%
36Slowinski's cornsnake
Pantherophis slowinskii
Colubridae00.0%
Source: GBIF occurrence records (CC0, CC BY) located in Arkansas, read 2026-09-29. Share = part of all licensed snakes records in the state.

Also recorded in Arkansas, fewer than 10 times

Beyond the main list, four snake species are known from Arkansas by only 3 to 9 records each. Some are genuine rarities at the edge of their range; others may be strays, released pets or old misidentifications, so treat them as unconfirmed. Venomous among them: Texas coral snake.

Bitten in Arkansas? Call 911 for a venomous snakebite or any bite with trouble breathing. For advice on any bite or sting, call Poison Help at 1-800-222-1222 (free, 24/7, U.S.-wide). Do not cut the wound, suck out venom or use a tourniquet. General information, not medical advice. Do not handle or try to identify a snake or spider by this page; if unsure, treat it as venomous.

Related pages

GBIF records read 2026-09-29. Listed: any license. Counted: CC0/CC BY only. How we count.

About these numbers

A species is listed for a state once GBIF holds at least 10 records of it located inside the state by coordinates, under any license. Every count, share, month and county shown is computed only from records published under CC0 or CC BY, so a listed species can show few or no counted records. Monthly patterns show when people record snakes, which also reflects when people are outdoors. Venomous status follows taxonomy: pit vipers and coral snakes; widow and recluse spiders; the Arizona bark scorpion. Records filed under older names count for the species they belong to today. Full methodology.