On this page, you can find an overview of snakes in New Hampshire. Of the 11 snake species native in New Hampshire, the rarely-seen timber rattlesnake is the only venomous snake. The other 10 species are non-venomous and no threat to humans or larger pets.
Just click on any of the images or links below to learn more about the snake.
If you have encountered a snake in New Hampshire that is not yet on our list or that you cannot identify yourself, we’ll be happy to identify it for you. Simply take a picture of it and upload your picture, a quick description and the U.S. state where it was found here on our snake identification page.
Venomous snakes in New Hampshire
The timber rattlesnake is the only venomous snake in New Hampshire. The snake is almost exclusively found in the western part of the state and even there, sightings are rare. New Hampshire has listed the timber rattlesnake as a species of greatest conservation need due to the declining population numbers.
Crotalus Horridus – Timber Rattlesnake
List of non-venomous snakes in New Hampshire
Of the 10 non-venomous snakes in New Hampshire, four are rarely seen and listed as species of greatest conservation need. These are the eastern hognose snake, the smooth green snake, the ribbon snake and the racer snake. The dekay’s brown snake and the common garter snake are the most common snakes of New Hampshire.
Coluber Constrictor – Racer
Diadophis Punctatus – Ring-Necked Snake
Heterodon Platirhinos – Eastern Hognose Snake
Lampropeltis Triangulum – Milk Snake
Nerodia Sipedon – Common Watersnake
Opheodrys Vernalis – Smooth Green Snake
Storeria Dekayi – Brown Snake
Storeria Occipitomaculata – Redbelly Snake
Thamnophis Sauritus – Ribbon Snake
