← Western Hognose Snake care guide

How Big Do Western Hognose Snakes Get?

Western Hognose Snake (Heterodon nasicus)
Photo: Peter Paplanus via Wikimedia Commons, CC BY 2.0

Male Western hognose snakes reach 18 to 24 inches and females 24 to 30, making them one of the smaller colubrids kept. The published adult enclosure is around 30 by 12 by 12 inches.

Published adult size figures

FigureValueNotes
Adult males18-24 inSmaller sex
Adult females24-30 inNoticeably larger
Eastern hognoseSlightly largerA different species

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 18 to 24 months

Quick to a small adult size, so the housing question is settled early.

Clear sexual dimorphism

Females are substantially larger than males, more so than in corn snakes.

What that size means in practice

A 30 by 12 by 12 inch enclosure for an adult

The commonly published minimum, reflecting one of the smaller colubrids kept. Depth of substrate matters too, since they are enthusiastic burrowers.

Smaller than a corn snake or ball python

Which is much of their appeal for keepers with limited space, and why mouse-sized prey suits them for life.

Common questions

How big do hognose snakes get?

Western hognose males reach 18 to 24 inches and females 24 to 30. Eastern hognose snakes, a different species, run slightly larger.

Are female hognose snakes bigger than males?

Yes, noticeably. The sexual size difference is more pronounced than in corn snakes, so the sex affects the enclosure you will eventually want.

How big an enclosure does a hognose snake need?

A commonly published minimum of 30 by 12 by 12 inches for an adult, with enough substrate depth to burrow. They are smaller than corn snakes or ball pythons.