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.
The timber rattlesnake, Crotalus horridus, is a venomous snake native to the Eastern part of North America. It is usually around 40 inches (100 cm) long and light or dark brown with several dark brown, jagged, crossband patterns around its ...
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.