24 Types of Snakes in Ohio (Including the 3 Venomous Species)
November 1, 2026
Most people who search for types of snakes in Ohio expect a long list of dangers waiting in the backyard. The reality looks different: out of the native species that call the Buckeye State home, only three carry venom, and running into any of them is genuinely uncommon. According to the Ohio Department of Natural Resources, there are three venomous snakes found in Ohio: the eastern copperhead, the massasauga rattlesnake and the timber rattlesnake.
The other snakes on this list are harmless to humans, and many of them quietly help control the rodent, slug, and insect populations that would otherwise overrun gardens and farm fields. This guide covers 24 species found across Ohio, from the common garter snake sunning itself on a porch step to the rare rattlesnake tucked into a southeastern hillside.
Simple physical cues make most identifications easier than they sound: pit vipers have vertical, slit-shaped pupils, while harmless species have round pupils, and head shape often gives away the group before color pattern does.
Pro Tip: If a snake is close enough that pupil shape is visible, back away first and identify it from a safe distance. Ohio’s venomous species rarely strike unless startled or handled.
1. Eastern Garter Snake
The Eastern garter snake (Thamnophis sirtalis sirtalis) is the snake most Ohioans meet first, usually while weeding a flower bed or flipping over a log. It has three pale stripes running down a dark olive, brown, or black body, and it tolerates human activity better than almost any other native species.
Ohio wildlife officials list the Eastern garter snake as common statewide, and it feeds heavily on earthworms, slugs, and small amphibians. A melanistic, nearly all-black variety of the Eastern garter snake has been spotted near Lake Erie, which occasionally confuses people expecting the classic striped pattern. Readers curious about how this species compares to its relatives elsewhere can check a broader guide to garter snake species for side-by-side identification tips.
2. Plains Garter Snake
The Plains garter snake (Thamnophis radix) looks similar to its Eastern cousin but usually shows a brighter orange or yellow stripe down the center of its back. In Ohio, this species is far less secure than the common Eastern garter snake. Wildlife officials list the Plains garter snake as endangered in the state, with populations limited to a handful of counties.
It favors open, grassy habitat such as wet prairies and meadow edges rather than the suburban gardens the Eastern garter snake tolerates. Anyone comparing prairie-adapted reptiles across state lines may find the snakes of Iowa useful, since that state shares similar grassland species.
3. Eastern Ribbon Snake
The Eastern ribbon snake (Thamnophis sauritus sauritus) is often mistaken for a garter snake at first glance, but its body is noticeably slimmer, its tail longer in proportion, and its stripes sharper against a dark brown background. It sticks close to water, patrolling the edges of ponds, marshes, and slow streams for small fish and amphibians.
Ohio classifies the Eastern ribbon snake as uncommon, and it is far more likely to be seen gliding along a shoreline than crossing a lawn. For readers tracking how this species’ range extends into neighboring states, the snakes found in Connecticut include a related ribbon snake population worth comparing.
4. Short-headed Gartersnake
The Short-headed gartersnake (Thamnophis brachystoma) is one of Ohio’s more obscure residents, restricted almost entirely to a small cluster of northeastern counties near the Pennsylvania border. It is smaller and more slender than either the Eastern or Plains garter snake, rarely exceeding 18 inches, and its head is proportionally shorter and narrower.
Wildlife officials classify it as a species of concern, reflecting its limited range within the state. It feeds almost exclusively on earthworms, and it prefers open, grassy hillsides and pastures rather than wetland edges.
5. Butler’s Garter Snake
Butler’s garter snake (Thamnophis butleri) is smaller and more secretive than its common cousins, with a shorter body and stripes that sit lower on its sides. Ohio lists this species as uncommon, and it is concentrated mainly in the northwestern part of the state.
Like other garter snakes, it favors moist, open, grassy areas such as marshes, wet prairies, and meadows, though it will move into unkempt suburban lots with enough vegetation. Readers interested in how this species compares to garter snakes found in neighboring prairie states can look at the snakes native to Minnesota, where several related subspecies overlap in range.
| Species | Typical Length | Ohio Status |
|---|---|---|
| Eastern Garter Snake | 18–26 inches | Common |
| Plains Garter Snake | 20–30 inches | Endangered |
| Eastern Ribbon Snake | 18–26 inches | Uncommon |
| Short-headed Gartersnake | 10–18 inches | Species of Concern |
| Butler’s Garter Snake | 15–20 inches | Uncommon |
6. Lake Erie Water Snake
The Lake Erie water snake (Nerodia sipedon insularum) is a subspecies of the common water snake found only on the islands of western Lake Erie, including South Bass and Kelleys Island. It tends to be paler and less patterned than mainland water snakes, sometimes appearing almost solid gray.
Ohio lists this island population as common within its narrow range, a notable recovery for a snake that spent years under close conservation watch. Because it shares island shoreline habitat with several nesting bird species, readers exploring the region’s wildlife might also check the eagles found around Lake Erie, since both species depend on the same undeveloped rocky shorelines.
7. Northern Water Snake
The Northern water snake (Nerodia sipedon sipedon) is the snake most often mistaken for something dangerous. It grows heavy-bodied and dark, and when threatened it flattens its head and thrashes in the water, which triggers cottonmouth comparisons even though Ohio has no cottonmouths. Many people who report seeing a water moccasin or copperhead in the water actually saw the non-venomous Northern water snake.
This common species grows to around 40 to 45 inches at maximum, with color ranging from black and gray to brown or dark red-brown, darkening with age. It hunts fish, frogs, and crayfish along streams, ponds, and lake edges throughout the state.
Common Mistake: A defensive water snake flattening its body and hissing near the water’s edge is almost always this harmless species, not a venomous lookalike. Ohio has no native cottonmouths.
8. Rough Green Snake
The Rough green snake (Opheodrys aestivus) is a slender, bright grass-green snake with a pale yellow belly, built for life in shrubs and low tree branches rather than on the ground. Its keeled, or ridged, scales give it a slightly rough texture compared to its smooth-scaled relative.
Ohio wildlife officials classify this species as a species of concern, and it is absent from much of the state’s northwest. It hunts crickets, caterpillars, and other soft-bodied insects almost exclusively, making it one of the more insect-dependent snakes on this list. Readers curious about the insect populations it relies on can browse a guide to insects found throughout Ohio for more context.
9. Smooth Green Snake
The Smooth green snake (Opheodrys vernalis) looks similar to the rough green snake at a distance, but its scales lie flat instead of ridged, giving it a glossier appearance. It prefers open grasslands and meadows rather than shrubby edges, and its population has shrunk along with Ohio’s remaining prairie habitat.
The state lists the smooth green snake as endangered, making it one of the rarer species covered here. Because it depends on undisturbed grassland similar to habitat found further north, the snake species documented in Maine include a comparable population worth reviewing for range context.
10. Black Rat Snake (Eastern Ratsnake)
The Black rat snake, now more formally called the Eastern ratsnake (Pantherophis alleghaniensis), is a large, glossy black snake known for climbing high into trees and barns in search of rodents and bird eggs. It feeds on lizards, mice, rats, and even venomous copperhead snakes, making it one of the more beneficial predators in Ohio’s ecosystem.
Taxonomic classifications for Ohio’s large black snakes have shifted over the years, which sometimes causes confusion between this species and the gray ratsnake covered next. Farmers in particular value this snake for keeping barn rodent populations in check, a role shared with snakes found in states like the ones detailed in the snake species found in Alabama.
11. Gray Rat Snake
The Gray rat snake (Pantherophis spiloides) has largely replaced the black rat snake in Ohio’s official records as the state’s designated large ratsnake species outside the northwest corner. This essentially forest-dwelling snake occurs throughout most of Ohio, except in the range of the Eastern foxsnake, and is an accomplished climber often found high in trees or sheltering in woodpecker holes.
Gray ratsnakes often hibernate in rock crevices alongside other snakes, including copperheads and rattlesnakes, sharing winter dens in ways that surprise many people who assume venomous and harmless species stay separate. This shared-den behavior is one reason handling any large gray or black snake in rocky terrain deserves caution.
12. Eastern Fox Snake
The Eastern fox snake (Pantherophis vulpinus) gets its name from a musky odor it releases when threatened, similar to the smell associated with foxes. This species is uncommon throughout its restricted range in Ontario, Michigan, and Ohio, where it is found only near Lakes Huron and Erie, giving it one of the narrowest habitats on this list.
Because it resembles the venomous massasauga rattlesnake, it is sometimes killed by people who mistake it for that species, despite being completely harmless. Ohio lists the Eastern fox snake as a threatened species, and its shoreline habitat overlaps with populations documented in the snake species found in Michigan, since both states share the same Lake Erie and Lake Huron marsh systems.
13. Queen Snake
The Queen snake (Regina septemvittata) is a slender, olive-brown aquatic specialist with faint dark stripes and a yellow underside marked by four thin brown lines. Ohio classifies the queen snake as a species of concern, reflecting its dependence on clean, rocky streams with healthy crayfish populations.
Unlike most Ohio snakes, this species eats almost nothing but freshly molted crayfish, making stream water quality directly tied to its survival. Because it shares stream-edge habitat with several amphibian species, readers might also find the salamanders native to Ohio a useful companion guide to the same rocky creek ecosystems.
14. Northern Brown Snake
The Northern brown snake, also called DeKay’s brownsnake (Storeria dekayi dekayi), is a small, gray-brown snake with two rows of faint dark spots running down its back and a pale stripe between them. It thrives in urban and suburban environments, often found under mulch, leaf litter, or debris piles in city parks and backyards.
This species feeds mainly on earthworms and slugs, making it a quiet ally for anyone dealing with garden pests. Its tolerance for disturbed habitat means it survives in areas where larger, shyer snakes disappear entirely.
15. Midland Brown Snake
The Midland brown snake (Storeria dekayi wrightorum) is a subspecies of the Northern brown snake, sharing nearly identical appearance and habits but occupying a somewhat different geographic range within the state. The two subspecies intergrade where their ranges meet, making precise identification difficult without a detailed look at scale counts.
Like its Northern relative, this snake rarely grows beyond a foot in length and spends most of its life hidden beneath surface debris, emerging mainly to hunt small invertebrates after rain.
16. Northern Red-bellied Snake
The Northern red-bellied snake (Storeria occipitomaculata occipitomaculata) is easy to identify once flipped over, thanks to a bright red, orange, or occasionally gray belly that contrasts sharply with its dark brown or black back. It rarely exceeds 10 inches in length, making it one of the smallest snakes in Ohio.
Melanistic, almost entirely black individuals of this species occur in Ohio, which can make identification trickier without checking the belly color. It feeds primarily on slugs and snails, hiding under logs and rocks in wooded areas during the day.
17. Eastern Smooth Earth Snake
The Eastern smooth earth snake (Virginia valeriae valeriae) is one of the smallest snakes not just in Ohio but in the entire United States. It averages only about 8 inches long and is never more than a foot in length, spending nearly its entire life underground or beneath leaf litter.
This species is typically found only in southern Ohio, in areas like the Shawnee and Pike state forests, and its gray or dark brown coloring helps it disappear into soil. Anyone hiking those forests should check the base of trees and beneath fallen logs, since that is where this earth snake almost always hides.
18. Eastern Milksnake
The Eastern milksnake (Lampropeltis triangulum triangulum) has a checkered pattern of reddish-brown blotches outlined in black on a gray or tan background, a look that occasionally leads to confusion with copperheads despite being completely harmless.
This species is especially valuable to farmers because it hunts rodents of all kinds, earning it the nickname “farmer’s friend.” Eastern milksnakes occupy a wide variety of habitats in Ohio, including fields, woodlands, and agricultural areas. Its range extends south into states covered in the snake species found in South Carolina, where a related milksnake population fills a similar rodent-control role.
19. Northern Ring-necked Snake
The Northern ring-necked snake (Diadophis punctatus edwardsii) is instantly recognizable by the yellow or orange ring circling its neck against a black, gray, or olive body. Its belly is cream, off-white, orange, or yellow, and it grows to a maximum of about 15 inches, making it one of the smallest common snakes in Ohio, most often spotted near Lake Erie and across the eastern, southern, and central parts of the state.
It hides under bark, rocks, and logs during the day, emerging at night to hunt salamanders, worms, and small insects. When handled, it often releases a musky-smelling secretion rather than attempting to bite.
20. Eastern Hognose Snake
The Eastern hognose snake (Heterodon platirhinos) is named for its upturned, shovel-like nose, used for digging toads out of loose soil. This snake enjoys eating toads, digging them up from moist soil near water, and typically only grows to about 20 to 30 inches, found across most of Ohio but most commonly in the northwest, central, and southern regions.
When threatened, it puts on one of the more dramatic defensive displays of any Ohio snake: flattening its head like a cobra, hissing loudly, and, if that fails, rolling over to play dead with its mouth hanging open. Melanistic individuals of this species also occur in the state.
Readers exploring the meadow habitats this snake favors may enjoy the butterfly species found in Ohio, since both groups depend on similar open, sunny grassland edges.
21. Eastern Black Kingsnake
The Eastern black kingsnake (Lampropeltis nigra) is a glossy, solid black snake that can grow up to four feet long, sometimes confused with black rat snakes or black racers at a glance. Because its Ohio population is limited to a few areas along the state’s southern border, almost nobody elsewhere in the state should encounter one.
This species is famous among herpetologists for its willingness to eat other snakes, including venomous copperheads, using constriction to overpower prey much larger than expected for its size. Ohio classifies the Eastern black kingsnake as a species of concern, a status tied directly to its narrow southern range.
22. Northern Copperhead
The Northern copperhead (Agkistrodon contortrix mokasen) is the first of Ohio’s three venomous species and by far the most frequently encountered. It gets its name from a solid copper-colored head atop a pinkish-tan to gray-brown body marked with darker hourglass-shaped crossbands.
This species typically ranges from 24 to 36 inches long and is predominately found in southeastern Ohio, though scattered populations exist across the southern half of the state. The copperhead has bitten more people in the United States than any other venomous snake, though bites are very rarely fatal.
It is not aggressive by nature, and most bites occur when someone accidentally steps on one hidden in leaf litter.
| Species | Typical Length | Conservation Status |
|---|---|---|
| Northern Copperhead | 24–36 inches | Uncommon |
| Eastern Massasauga Rattlesnake | 18–24 inches | State & Federally Endangered |
| Timber Rattlesnake | 36–48 inches (up to 6 ft) | State Endangered |
Important Note: Wild snakes are protected under Ohio law, and it is illegal to harm or collect them without special permits. This protection applies to all species covered here, venomous or not.
23. Timber Rattlesnake
The Timber rattlesnake (Crotalus horridus) is Ohio’s largest and rarest venomous snake, with a heavy body covered in dark brown or black chevron-shaped crossbands over a yellowish or blackish-brown background.
It is the largest and rarest of Ohio’s three venomous species, historically found in every county in the state, including the Lake Erie islands, but only four small remnant populations remain today, located in the southeastern portion of the state. Timber rattlers can grow to a whopping 6 feet in length, though they’re usually closer to 3 feet.
The last recorded human snakebite fatality in the wild in Ohio happened in 1947, when a young woman near Tar Hollow State Park was bitten on the hand by a copperhead and died a few days later, illustrating just how rare fatal bites remain even from venomous species. Anyone curious how this species compares to rattlesnakes elsewhere can check the broader breakdown of how many rattlesnake species exist across North America.
24. Eastern Massasauga Rattlesnake
The Eastern massasauga rattlesnake (Sistrurus catenatus) is the smallest and most secretive of Ohio’s three venomous snakes, named using a combination of two words from the language of the Chippewa tribe of Native Americans. It is also known by the nicknames swamp rattler and black snapper, reflecting both its wetland habitat and its dark coloration.
This species ranges from 18 to 24 inches long and is scattered across the state, historically reported in 30 counties, though wildlife experts say it is rarely ever seen. In May 2024, an Ohio Department of Natural Resources officer found an eastern massasauga rattlesnake in Wyandot County during an annual snake survey, a sighting rare enough to make regional news. It favors bogs, swamps, and wet prairies over open water, and like the other two venomous species on this list, it would rather avoid humans entirely than strike.
Ohio’s snake population is far more varied than its reputation suggests, and the vast majority of the 24 species covered here pose no threat to people at all. Learning a few identification basics, such as pupil shape, head width, and preferred habitat, turns most backyard encounters into a chance to watch a beneficial predator at work rather than a reason for alarm.
If a snake’s identity is genuinely unclear, especially anywhere near the range of the copperhead, massasauga, or timber rattlesnake, the safest approach is always distance first, identification second. This information is intended for general wildlife education and is not a substitute for professional guidance during an actual snake encounter or bite.
Anyone bitten by a snake in Ohio, venomous or not, should seek medical attention promptly rather than attempting field identification or treatment. For readers who want to explore more of the state’s smaller wildlife, guides covering spider species in Ohio offer a similar look at commonly misidentified backyard residents.