Rattlesnakes are among the most iconic and widespread venomous reptiles in the United States, found across several different states. Belonging to the pit viper family, they use heat-sensing pits to detect prey and are equipped with hinged fangs that deliver potent hemotoxic venom. Their trademark rattle—made of interlocking keratin segments at the tip of the tail—serves as a warning signal, though not all rattlesnakes rattle before striking, especially when startled or threatened. More than a dozen species inhabit America’s deserts, forests, grasslands, and rocky slopes, including the Western diamondback, Eastern diamondback, timber rattlesnake, and Mojave rattlesnake. While rattlesnake bites can be dangerous, they are relatively rare and rarely fatal thanks to modern antivenom; most encounters occur when people accidentally step near or attempt to handle the animals.
There are about 36 species of rattlesnakes and a further 65 to 70 subspecies. The eastern diamondback is the largest rattlesnake ever recorded and can grow to a whopping eight feet long. Check out this article to find out which states have the most rattlesnake species, so you can be on the lookout.
Watching Out for the Danger of Rattlesnakes
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Whenever you’re travelling in any of the following states, always make sure you’re extremely careful and pay attention to where you’re stepping! Don’t go running or walking with headphones on, as a rattlesnake will rattle and try to warn you before biting in most cases! If you can’t hear them, then you’re much more likely to be bit!
21. Minnesota
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The timber rattlesnake is found in the eastern and central United States, with Minnesota being on the northwestern edge of its range. In Minnesota, it inhabits eight southeastern counties, though populations have significantly declined due to human activities. Key causes of this decline include systematic destruction, habitat loss, road mortality, and collection for the pet trade.
20. Arkansas
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- Number of rattlesnake species: 2
- One such species: western diamondback
19. Oregon
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- Number of rattlesnake species: 3
- One such species: Great Basin rattlesnake
18. Oklahoma
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- Number of rattlesnake species: 3
- One such species: western Massasauga
17. North Carolina
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North Carolina has three species of rattlesnakes like the Great Basin rattlesnake, among others.
- Number of rattlesnake species: 3
- One such species: Great Basin rattlesnake
16. Nebraska
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Nebraska has three species of rattlesnakes like the eastern diamondback rattlesnake, among others.
- Number of rattlesnake species: 3
- One such species: eastern diamondback
15. Missouri
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- Number of rattlesnake species: 3
- One such species: eastern Massasauga
14. Mississippi
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- Number of rattlesnake species: 3
- One such species: canebrake rattlesnake
13. Louisiana
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- Number of rattlesnake species: 3
- One such species: canebrake rattlesnake
12. Iowa
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- Number of rattlesnake species: 3
- One such species: eastern Massasauga rattlesnake
11. Georgia
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- Number of rattlesnake species: 3
- One such species: eastern diamondback
10. Florida
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- Number of rattlesnake species: 3
- One such species: eastern diamondback
9. Colorado
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- Number of rattlesnake species: 3
- One such species: midget faded rattlesnake
8. Alabama
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- Number of rattlesnake species: 3
- One such species: timber rattlesnake
7. Kansas
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- Number of rattlesnake species: 4
- One such species: prairie rattlesnake
6. Nevada
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- Number of rattlesnake species: 5
- One such species: speckled rattlesnake
5. Utah
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- Number of rattlesnake species: 6
- One such species: Hopi rattlesnake
4. New Mexico
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- Number of rattlesnake species: 7
- One such species: mottled rock rattlesnake
3. Texas
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- Number of rattlesnake species: 9
- One such species: black-tailed rattlesnake
2. California
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- Number of rattlesnake species: 12
- One such species: Colorado desert sidewinder
1. Arizona
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- Number of rattlesnake species: 14
- One such species: western diamondback
