Cottonmouths in Virginia: Where They Live and How Often They Bite. Located in the southeastern region of the US, Virginia is known for its vast and diverse habitats. The stunning Chesapeake Bay, the Shenandoah Valley, and numerous rivers, mountains, and forests, there is something there for everyone to explore. However, if you’re out exploring, it’s important to take care as there are 32 snakes in the state, with three being venomous. One of these is the cottonmouth – also known as the water moccasin. So, join us as we discover everything you need to know about cottonmouths in Virginia!