Some may bite, but none of Maine's nine known snake species are venomous. Common snakes in the New England state of Maine include the milk adder snake, the common garter snake, the northern water snake, the red-bellied snake, the smooth green snake and a variety of keeled snakes. Maine has no venomous snakes.
Snakes are beneficial—they help control insect and rodent populations, and they are fun to watch. Many people are afraid of snakes because they don't know enough about them. Young snakes are gray and darken as they age.

Maine's lone endangered snake, the black racer or coluber constrictor, matures at up to 6 feet long.

The black racers' numbers dwindled in Maine as its preferred forest … …That said, there is a tiny (and critically endangered) population of Timber Rattlesnakes in neighboring New Hampshire, so it is not outside the realm of possibility that one could somehow find its way to Maine. I would assume there are some, but I wouldn't keep the antivenin supply shop on speed dial.
Snakes. The Timber Rattlesnake has always been "The Maine Snake", but many people claim it has left entirely. The black racer, named for its speed and shiny, solid black scales, has a white throat and chin. There are no poisonous snakes in Maine. Also known as the eastern racer, this big snake is found in greater numbers elsewhere in the country.