South Carolina is home to all 4 major groups of venomous ( i.e. poisonous ) snakes in North America:
Rattlesnakes ( Eastern Diamondback, canebrake,aka Timber) Genus Crotalus
Pygmy rattlesnakes (sistrurus miliarius)
Cottonmouths ( also known here, as above, as Water Moccasins)Agkistrodon piscivorus
Copperheads Agkistrodon contortrix
and
Coral Snakes ( Family Elapidae, kin to cobras, etc) Micrurus fulvius

I can count and know this is five listings, but I do not think many non-herpetologically inclined people note the distinction among the rattlesnakes.

Interestingly, SC is also home to all four types of barbecue sauce: Mustard, tomato, vinegar, and ketchup http://www.scbarbeque.com/History.html

On a day-to-day basis, I encounter more barbecue than venomous snakes