How Big Do Corn Snakes Get?
Corn snakes reach 3 to 5 feet and commonly 600 to 900 grams, which makes them noticeably slimmer than ball pythons of the same length. The published adult enclosure is the same 4 by 2 by 2 feet.
Published adult size figures
| Figure | Value | Notes |
|---|---|---|
| Adult | 3-5 ft | Published range |
| Weight | Commonly 600-900 g | Slim-bodied |
| Hatchlings | 8-12 in | At emergence |
Checked September 20, 2026 against the sources at the foot of this page. Where sources differ the range is shown rather than averaged.
Getting there
Hatchling to adult in 2 to 3 years
Steady and predictable growth, faster than a ball python's.
Sexes are close in size
Roughly equal, with a slight female bias toward the upper end of the range.
What that size means in practice
4x2x2 feet, same as a ball python
Despite the slimmer build, the commonly published adult footprint is the same. Corn snakes are far more active than ball pythons and use the space differently.
Slim means smaller prey than the length suggests
A four-foot corn snake takes substantially smaller prey than a four-foot ball python. Sizing by length rather than girth is a common overfeeding route.
Common questions
How big do corn snakes get?
Adults reach 3 to 5 feet, weighing commonly 600 to 900 grams. They are slim-bodied compared with a ball python of similar length.
How big an enclosure does an adult corn snake need?
A commonly published 4 by 2 by 2 feet, the same as a ball python despite the slimmer build. Corn snakes are more active and genuinely use the floor space.
Do male or female corn snakes get bigger?
They are roughly equal, with a slight female bias toward the upper end of the range. The difference is far smaller than in ball pythons.