How Big Do Corn Snakes Grow?

How big do corn snakes growFind out how big your corn snake is going to grow is essential for any new corn snake owner – most importantly, so you know what size vivarium you need to buy.

Not having the right size tank can have bad consequences for your corn snake – too small a vivarium can limit their movement, while too large a vivarium can make your snake feel stressed.

Read on to find out how big you can expect your corn snake to grow, which factors affect its size and what size vivarium your pet needs.


Average corn snake length

Most corn snakes are 2 ½ to 5 feet long while hatchlings are usually 8 to 14 inches long. In general it will take your corn snake around 2 years to reach its full length.

A corn snake’s manageable size is one of the main reasons why it makes such a popular pet. Corn snakes are large enough to be an interesting pet but they’re not so big that they’re difficult to care for or dangerous to handle.

Corn snakes spend most of their time curled up so you probably won’t see it at its full length very often. But however big your corn snake gets, caring for it will still be a manageable task.


How sex affects corn snake size

Corn snake size is affected by a number of factors – including their sex. Male corn snakes tend to be larger than female corn snakes, and are more likely to reach the upper end of the size spectrum. Female corn snakes will generally be smaller.


How environment affects corn snake size

Genetics isn’t the only factor that affects your corn snake’s size – your snake’s environment will also affect how big it grows. Captive corn snakes will always be a little bit smaller than their wild counterparts but if your corn snake vivarium is too small, this will limit its growth.

So if you’re keeping a corn snake as a pet, choosing the right size vivarium is essential. Corn snakes will only grow to the maximum size that their tank allows so if your vivarium is too small, your snake won’t reach its full size.

As a rule of the thumb, the height of your tank should be approximately one third of your corn snake’s length and there should be one square foot of floor space for every foot of snake. We’d recommend these vivariums:


How diet affects corn snake size

Just like any animal, your corn snake will be much more likely to grow to its full size if it’s well-nourished. For this reason, it’s essential to make sure your snake has a healthy and nutritious diet. We’ve got more information about what to feed your corn snake in our corn snake setup guide – take a look to find out what kind of food your snake needs.


And there you have it – now you know how big corn snakes get and how to choose the right size tank, stay on Vivarium World for even more corn snake care advice: