8. Oklahoma
Venomous snakes count: 10
Most common venomous snakes of Oklahoma are rattlesnakes which include: desert massasauga, prairie rattlesnake, timber rattlesnake, western diamond rattlesnake, western massasauga and western pygmy rattlesnake. Western diamond rattlesnake is considered to be the longest of them, and can reach up to 7.5 feet. Other venomous species are cottonmouths and copperheads with the following subspecies: broad-banded copperhead, osage copperhead, southern copperhead and western cottonmouth.
