New Hampshire
Snakes in Hillsborough County
10 species have been documented here, and none are venomous.
Every snake recorded in Hillsborough County

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Common Ribbon Snake
Thamnophis saurita
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

North American Racer
Coluber constrictor
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Hillsborough County: FAQ
- Are there venomous snakes in Hillsborough County, New Hampshire?
- No venomous snakes have verified records in Hillsborough County, New Hampshire. Every snake recorded here is harmless to humans, though any snake may bite defensively if handled.
- How many snake species live in Hillsborough County, New Hampshire?
- 10 snake species have verified records in Hillsborough County, New Hampshire.
- What is the most commonly seen snake in Hillsborough County, New Hampshire?
- The Common Garter Snake is the most frequently reported snake in Hillsborough County, New Hampshire, based on verified wildlife observations.