Missouri is a hotspot for snake diversity: Here's what lives in your backyard

Missouri might look peaceful with its forests, rivers, and suburban neighborhoods, but underneath all that, it's one of the states with the most snake variety in the US. The mix of wetlands, woodlands, farmland, and cities creates great conditions for snakes to thrive. So whether you’re in St. Louis or the Ozarks, chances are you’ll come across some slithering friends, especially in warmer weather.

Why does Missouri have so many snakes?

According to the Missouri Department of Conservation, it’s mostly because of its geography. Situated at the intersection of eastern forests, central grasslands, and southern wetlands, Missouri has it all. Its warm summers let snakes hunt for longer, while mild springs and falls give them more time to breed and feed. Add to that, Missouri’s got lots of rivers, hills, old farms, and thick brush—perfect spots for snakes to chill, find food, and stay hydrated.

The most common backyard snakes in Missouri

A study from the National Institutes of Health, Missouri is home to more than 40 snake species, but only a handful are commonly seen near homes.

One of the most frequently encountered is the Eastern Garter Snake, a harmless and adaptable species often found in gardens and grassy areas. It feeds on insects, worms, and small amphibians and is often mistaken for more dangerous snakes due to its striped appearance.

The black rat snake is another common resident. It can grow quite large and is often spotted near barns or wooded areas. Despite its size, it is non-venomous and plays an important role in controlling rodent populations.

The venomous species that attract most attention

The Eastern Copperhead is one of the most widespread venomous snakes in the state and is known for its copper-colored body and camouflage that blends perfectly with fallen leaves. It often stays motionless, making accidental encounters more likely during gardening or hiking.

Missouri is also home to the Timber Rattlesnake, typically found in forested and rocky regions, and the Cottonmouth (Water Moccasin), which prefers wetland areas, swamps, and slow-moving streams in the southern parts of the state.

Guess where most snake run-ins happen

Places like garden sheds and sunny patios in backyards are perfect for snakes looking for warmth and mice. In rural areas, farmers often bump into them in fields and barns. Plus, Missouri’s rivers? Fantastic resting spots for Cottonmouths, Copperheads, and Timber Rattlers.

Encounters happen a lot because of this growing habit of ours to push further into green spaces and their changing climate. Warmer, humid weather brings out those cold-blooded guys to soak up some rays and hunt for food. As rodent numbers go up around towns and farms, snakes tag along, sniffing out easy dinners that lead them right into our basements and garages.

Now here’s a pro tip: most snakes don't want to mess with us. Their favorite move is disappearing or freezing. Usually, they bite if someone accidentally steps on them or tries to grab one. Still, it’s best not to take any risks with venomous species.

Though they may scare some folks, snakes serve a vital role in the ecosystem. Copperheads and timber rattlers might sound scary, but they help control critters that cause crop damage and spread illness. Without them, rodent problems would skyrocket.

To live peaceably with these reptilian neighbors, there are easy steps we can take. Keep lawns tidy, store wood away from the house, seal up spaces, and clear out piles of junk where snakes might hang. Also, when exploring outside, stick to paths, wear sturdy shoes, and avoid reaching into spots you can’t see into. And remember, if you do come face-to-face with a snake, give it space. Call an expert if you need to remove one safely.

Missouri’s diverse collection of snakes isn’t scary. Instead, think of it as a lively sign of the natural world thriving right alongside us.