How Big Can a Corn Snake Get? Uncovering the Truth Behind the Largest of Snakes

» Corn Snakes » How Big Can a Corn Snake Get? Uncovering the Truth Behind the Largest of Snakes

Do you have a fascination for corn snakes? Are you wondering how big can a corn snake get? This article will discuss the maximum size of a corn snake, as well as what you can expect from this popular pet snake. We will examine some of the factors that can influence the size of a corn snake, and look at how to properly care for it. Read on to learn more about this captivating reptile.

Types of Snakes

Types Of Snakes

Common Name Scientific Name
Corn Snake Pantherophis guttatus
Boa Constrictor Boa constrictor
King Cobra Ophiophagus hannah
Reticulated Python Python reticulatus
Garter Snake Thamnophis sirtalis
Green Tree Python Morelia viridis
Black Mamba Dendroaspis polylepis
Rhinoceros Viper Bitis nasicornis
Hog-Nosed Snake Heterodon platirhinos
Bullsnake Pituophis catenifer sayi

Snakes come in a variety of shapes, sizes and colors. Some of the most common types of snakes are the corn snake, boa constrictor, king cobra, reticulated python, garter snake, green tree python, black mamba, rhinoceros viper, hog-nosed snake, and bullsnake. Each species has its own unique characteristics, including size, habitat, diet, and behavior. Corn snakes are one of the most popular pet snakes in the world, and they typically reach lengths of 3-6 feet (90-180 cm).

Corn Snake Overview

Corn Snake Overview

  • Scientific name: Pantherophis guttatus
  • Native to southeastern United States
  • Non-venomous species of rat snake
  • Commonly found in forests, fields, and near human habitations
  • Highly variable in color: ranging from bright yellow to orange to reddish-brown with blotched or striped patterns
  • Males typically larger than females
  • Average length between 2 and 4 feet
  • Life span of 10-20 years

Factors Affecting Corn Snake Size

Factors Affecting Corn Snake Size

  • Genetics: Genetics play a major role in determining the size of a corn snake. The size of a corn snake is determined by the size of its parents, and this is especially true if the snake is bred in captivity.
  • Gender: Female corn snakes tend to reach larger sizes than males. A female corn snake can reach a length of 5-6 feet, while a male corn snake typically reaches a length of 3-4 feet.
  • Age: Corn snakes reach their full size at around 3-5 years of age. After this, their growth rate will slow down and they will not continue to grow larger.
  • Habitat: Corn snakes are native to the southeastern United States, which is a region with a warmer climate. In this region, corn snakes typically reach larger sizes than in colder climates.
  • Diet: Diet plays a big role in a corn snake’s growth. A corn snake that is well-fed with a nutritious diet will grow larger than one that is not. Additionally, corn snakes that are overfed will become overweight and their growth will be stunted.



Genetic factors play a key role in determining the size of a corn snake. In the wild, corn snakes typically reach a maximum length of between four and five feet, with the longest recorded wild corn snake measuring just over five feet. In captivity, however, they can grow to be much larger, with some reaching lengths of up to six feet. The largest corn snake ever recorded measured an impressive seven feet and two inches.

The size of a corn snake is largely determined by its genes, which are passed down from its parents. Corn snakes bred in captivity tend to have larger genes for size, which allows them to grow to a larger size than those in the wild. Those with larger genes will also tend to produce larger offspring, meaning that a long-term breeding program can be used to produce larger and larger corn snakes.

Genetic mutations can also occur and lead to larger than normal corn snakes. These mutations are rare, however, and are usually not passed on to subsequent generations. This means that, while it is possible to get a corn snake that is larger than the average size, it is unlikely that this will be passed down to its offspring.



  • Corn snakes feed mainly on rodents such as mice and rats.
  • In the wild, they may also feed on birds, lizards, frogs, and other small animals.
  • In captivity, they should be offered pre-killed rodents that are appropriate for their size.
  • They should also be offered a variety of food items to ensure they are getting a balanced diet.


Corn snakes are crepuscular, meaning they are most active during the twilight hours of dawn and dusk. In the wild, they prefer warm, dry environments, such as rocky hillsides or open grasslands. In captivity, they need a temperature gradient of 24°C to 30°C, with an additional warm basking spot of around 35°C. Corn snakes require a humidity level of 40-60%, which can be achieved by misting the enclosure twice a day. They need a secure, escape-proof enclosure with a substrate suitable for burrowing, such as aspen shavings, coconut husk, or reptile bark. The enclosure should also provide places for climbing, such as branches, rocks, or artificial vines.

Average Size of Corn Snakes

Average Size Of Corn Snakes

  • Adults can reach between 3 to 5 feet in length.
  • Males tend to be smaller than females.
  • They can reach a weight of up to 250 grams.
  • Average lifespan is between 10-15 years.

Maximum Size of Corn Snakes

Maximum Size Of Corn Snakes

Gender Size
Male 4-6 feet
Female 5-7 feet

Corn snakes are a medium-sized species of snake equalling a maximum size of 4-6 feet for males and 5-7 feet for females. They are a slender species of snake and can usually be identified by the dark brown, black, and red stripes that run down their body.

How to Measure a Corn Snake

To understand how big a corn snake can get, it is important to understand how to measure them. To accurately measure a corn snake, you will need a flexible measuring tape or ruler.

Start by gently lifting the snake and place it on the measuring tape or ruler. Make sure the snake is lying on its belly with its head at the beginning of the ruler. Then, measure the length of the snake from the tip of its nose to the end of its tail. This is the snake’s total length.

Next, measure the circumference of the snake’s body. To do this, wrap the measuring tape around the widest part of the snake’s body. Make sure the tape is snug but not too tight. This is the snake’s circumference.

Finally, measure the tail length by measuring from the base of the tail to the tip of the tail.

Once you have all three measurements, total length, circumference, and tail length, you can accurately determine the size of your corn snake.

Difference in Size Between Male and Female Corn Snakes

Corn snakes are a species of small to medium-sized non-venomous snake found primarily in the southeastern United States. They can reach lengths of 3 to 5 feet, with females generally being larger than males. On average, females reach lengths of 4 to 5 feet, while males usually reach lengths of 3 to 4 feet.

Gender Length
Male 3 to 4 feet
Female 4 to 5 feet

The size difference between male and female corn snakes can be quite noticeable. Female corn snakes tend to be longer and heavier, often having a thicker body than males. In addition, the tail of a female corn snake is usually longer than that of a male.

Frequently Asked Questions

What is the Maximum Size of a Corn Snake?

Corn snakes can grow up to 5 ft in length, although 4 ft is more common. The average adult size is 3-4 feet. The weight of a full grown adult corn snake is typically between 200-250g.

How Long Do Corn Snakes Live As Pets?

Corn snakes, when properly cared for, can live up to 20 years in captivity. They are hardy reptiles and can thrive with regular feeding and proper enclosure conditions. A corn snake’s health and lifespan can be greatly impacted by their habitat and diet, so it is important for owners to provide proper enclosure conditions and nutrition for their pet snakes.

What do Corn Snakes Eat in the Wild?

Corn snakes are primarily carnivorous, and in the wild, they feed on small rodents like mice and voles. They also eat other small animals like lizards, frogs, and birds. They typically hunt by ambushing their prey, and will often climb trees and shrubs to find food.

What size mice should be fed to a corn snake?

Corn snakes should be fed appropriately sized mice that are no larger than the widest point of the snake’s body. It is recommended to feed pre-killed mice that are specifically manufactured for snakes, as they are frozen and safe to use. If the snake is less than four months old, it should be fed pinky mice, while larger snakes should be fed fuzzies, hoppers, and adult mice.

When is the Best Time to Feed Corn Snake Fuzzies?

Newborn corn snakes, or ‘fuzzies’, should be fed twice a week. As they grow, their meals can be reduced to once a week. The best time to feed fuzzies is at night, when they are most active. Corn snakes should be offered food that is no larger than the widest part of their body.


The maximum size of a corn snake is approximately 6 feet in length. While this is a large snake, it is not considered dangerous by most experts and can make a great pet. Corn snakes are also relatively low-maintenance, making them an ideal choice for first-time snake owners. With proper care and a healthy diet, corn snakes can live up to 20 years or more.

Leave a Comment