10. Michigan
There are 18 non-venomous snakes and one venomous snake species in Michigan. That is the eastern massasauga rattlesnake (Sistrurus catenatus catenatus). These snakes inhabit wet swampy areas, grasslands or even farmlands. They are mostly widespread in Lower Peninsula in Michigan. Their population is decreasing, mostly because of killing by humans, and they are considered to be endangered species, on the list of special concern and protected by law.