Discover the 3 Types of Rattlesnakes in South Carolina

Written by Kellianne Matthews
Updated: June 7, 2023
© Joe McDonald/
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Key Points:

  • There are 36 species of snakes in South Carolina – including six that are venomous.
  • Timber rattlesnakes are protected by law in South Carolina – making it illegal to touch, kill or move them.
  • Eastern diamondback rattlesnakes are the largest venomous snake in South Carolina, growing up to 8 feet in length.
  • Pygmy rattlesnakes are small compared to other rattlesnakes – growing only 14 – 30 inches in length. These snakes also have very small rattles that make a light buzzing sound when they vibrate their tails that can’t be heard more than 3 feet away.

Located along the southeast coast of the United States,  South Carolina is mostly humid and subtropical, with mild winters and hot summers. Within the state, there are three main geographic regions with varying environments. The Blue Ridge Mountains region along the northwestern edge of South Carolina, the Piedmont region extending from the northern regions to central South Carolina, and the Atlantic Coastal Plain, which covers the southeastern ½ of the state.

South Carolina
South Carolina is just south enough to avoid brutal winters and far enough north to escape the sweltering summers.


Each of these three regions is home to its own unique environment and wildlife, including over 36 species of snakes. Only 6 of South Carolina’s snake species are venomous and dangerous to humans, however, like coral snakes, copperheads, cottonmouths, and rattlesnakes. Let’s take a closer look at the 3 types of rattlesnakes in South Carolina.

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1. Timber Rattlesnake

Timber rattlesnaake coiled in a loop
There are two main color variants of Timber Rattlesnakes in South Carolina.

©Frode Jacobsen/

Timber Rattlesnake
RangeAll of South Carolina
Length30-60 inches

Timber Rattlesnakes are common throughout the state of South Carolina. These snakes are protected by state laws, so it is illegal to touch, kill, or move any timber rattlesnake in South Carolina. As cold-blooded animals, these snakes are generally more active during the warmer months. During this time, they often can be seen coiled up as they patiently wait to ambush any unsuspecting prey animals that happen to scurry by. Timber rattlesnakes eat small mammals like mice, squirrels, and rabbits. Occasionally they may also eat birds that get too close.

Timber rattlesnakes are especially common in July and August when they are seeking mates. Female timber rattlesnakes give live birth to 5-14 baby snakes sometime during the late summer or early fall. If you are out exploring the natural beauty of South Carolina during these warmer months, be sure to keep an eye out for these snakes. Although timber rattlesnakes do not actively attack humans, they are dangerous. Their venom is extremely toxic and can destroy organs, tissue, and circulatory systems.

The Two Types of Timber Rattlesnakes in South Carolina

So, what exactly do timber rattlesnakes look like? These snakes have large, heavy bodies, and typically grow between 30-60 inches in length. Timber rattlesnakes have wide, triangular-shaped heads with thin necks and cat-like elliptical pupils. The end of their tail is dark and has a large, segmented rattle. Some snakes may also have an orange or yellowish-colored stripe running down the center of their backs, although many snakes do not. Other timber rattlesnakes can sometimes be so dark in color that they look almost completely black.

Timber rattlesnakes have a wide variety of colors throughout their larger range, but in South Carolina, there are two color variants. The first is the timber rattlesnakes that live in mountainous areas. These snakes are typically yellow or yellowish-brown and have dark chevron bands running along the length of their bodies. They are common near ponds and streams, or along south-facing rock outcroppings.

The second type of color variant lives in the Piedmont region and the Atlantic Coastal Plains. Timber rattlesnakes in these regions are referred to as “Canebrake Rattlers”. These snakes are usually lighter than those found in the mountains. Their bodies come in various shades of pink, pinkish-orange, or tan, with dark chevron bands. Canebrake Rattlers enjoy forested areas and wetland habitats.

2. Eastern Diamondback Rattlesnake

Eastern Diamondback Rattlesnake Close Up
The diamond patterns on the back of eastern diamondback rattlesnakes often fades towards their tail.


Eastern Diamondback Rattlesnake
RangeLower Coastal Regions of South Carolina
Length33-72 inches

Eastern Diamondback Rattlesnakes live along the lower coastal regions of South Carolina. These snakes live in grasslands, rolling pine hills, sandy coasts, and longleaf pine flatwoods. Eastern diamondback rattlesnakes are large and extremely dangerous. However, humans rarely see or encounter them in South Carolina. If you do see an eastern diamondback rattlesnake, it is best to stay at least 20 feet or more away from it. Most bites from eastern diamondback rattlesnakes occur when the snake is stepped on or harassed by a human.

Like their name, eastern diamondback rattlesnakes have large, distinctive dark diamond markings along their backs. They have a sandy base coloring, and their scales are heavily keeled, which means each scale has a textured ridge. Eastern diamondback rattlesnakes are the largest venomous snake in South Carolina, growing up to 8 feet in length! However, most snakes do not grow longer than 6 feet.

When they feel threatened, eastern diamondback rattlesnakes often rattle their tails loudly as a warning. However, in many cases, these snakes choose to stay quiet in the hope that they can remain undetected. During the warmer months of the year, eastern diamondback rattlesnakes hunt small mammals. They especially like to eat rice rats and rabbits. During the winter these snakes shelter in the burrows of other animals like gopher tortoises.

3. Pygmy Rattlesnake

Pygmy Rattlesnakes in South Carolina are sometimes called Ground Rattlers.

©Suzanna Ruby/

Pygmy Rattlesnake
RangeCoastal Plains Region of South Carolina
Length14-30 inches

Pygmy Rattlesnakes (sometimes spelled Pigmy) live in the Coastal Plains Region of South Carolina. These snakes typically live in mixed forests, sandhills, and floodplains. Between March and October, it is possible to encounter a pygmy rattlesnake anywhere near bodies of freshwater like marshes, swamps, ponds, and streams. Pygmy rattlesnakes are active during these months as they hunt for small animals like frogs, lizards, and small rodents.

Compared to the other rattlesnakes in South Carolina, pygmy rattlesnakes are very small, growing only 14-30 inches in length. These snakes also have very small rattles that make a light buzzing sound when they vibrate their tails. In fact, you probably won’t hear them if you are more than 3 feet away. Despite their small size, however, they are venomous and can act aggressively. Their venom is cytotoxic, but they can not inject a large amount into each bite because they have small fangs.

Pygmy rattlesnakes are typically pinkish or grey in color and have dark blotches and spots running down their backs and the sides of their bodies. Some snakes also have a reddish, orange, or pinkish stripe running along the middle of their backs between the blotches. However, many pygmy rattlesnakes lack this colored stripe. Young pygmy rattlesnakes have bright yellow tips on their tails that they twitch to look like a worm. This helps the small snakes lure smaller animals close so they are easier to catch.

Other Venomous Snakes in South Carolina

copperhead camouflaged in leaves
Copperheads are easily hidden on the ground because of their color.


Copperheads are venomous pit vipers that are responsible for more snake bites than any other species in the United States. This is because the copperhead is perfectly camouflaged on the ground among fallen leaves and is often stepped on accidentally. These snakes are unique in many ways – including their ability to use their tails as bait for frogs and lizards when they are young and learning to hunt. Copperheads are also able to reproduce by way of parthenogenesis – meaning the female’s eggs do not have to be fertilized by a male to produce offspring. Copperheads have also been known to hibernate with groups of other snake species such as rattlesnakes and rat snakes. They can adapt to a variety of habitats including open woods, edges of wetlands, and rocky outcrops.

Summary of 3 Types of Rattlesnakes in South Carolina

1 Timber Rattlesnake30 – 60 inches long
2Eastern Diamondback Rattlesnake33 – 72 inches long
3Pygmy Rattlesnake14 – 30 inches long

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Rattlesnakes While HIking - Timber Rattlesnake
Beware Timber Rattlesnakes that are camouflaged and hiding in Pennsylvania.
© Joe McDonald/

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About the Author

As a professional writer and editor for many years, I have dedicated my work to the fascinating exploration of anthrozoology and human-animal relationships. I hold a master's degree with experience in humanities, human-animal studies, ecocriticism, wildlife conservation, and animal behavior. My research focuses on the intricate relationships and dynamics between humans and the natural world, with the goal of re-evaluating and imagining new possibilities amid the uncertainty and challenges of the Anthropocene.

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