With 13-15 species, Arizona has the highest rattlesnake diversity in the US. Notable species include the Western Diamondback and the Mojave.
Texas has 8 confirmed species of rattlesnakes, including the Western Diamondback, Eastern Diamondback, and Timber Rattlesnake.
California is home to 7 species of rattlesnakes, including the Western Diamondback, Sidewinder, and Great Basin Rattlesnake.
New Mexico has 7 species of rattlesnakes, including the Western Diamondback, Prairie Rattlesnake, and Rock Rattlesnake.
Oklahoma has 5 species of rattlesnakes, including the Western Diamondback, Timber Rattlesnake, and Desert Massasauga.
Oregon is home to the Western and Great Basin rattlesnakes, which favor rocky habitats.
Kansas has several species of rattlesnakes, including the Prairie Rattlesnake, Pygmy Rattlesnake, and Timber Rattlesnake.
North Carolina is home to several species of rattlesnakes, including the Eastern Diamondback, Timber Rattlesnake, and Pygmy Rattlesnake.