Massachusetts
Snakes in Middlesex County
12 species have been documented here, 2 of them venomous.
Venomous snakes in Middlesex County
Full guide & what to do if bitten →
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Middlesex County
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
North American Racer
Coluber constrictor
Harmless
Common Ribbon Snake
Thamnophis saurita
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Timber Rattlesnake
Crotalus horridus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Middlesex County: FAQ
- Are there venomous snakes in Middlesex County, Massachusetts?
- Yes. 2 venomous snake species have verified records in Middlesex County, Massachusetts, including Eastern Copperhead, Timber Rattlesnake. Most snakes in Middlesex County, Massachusetts, however, are harmless.
- How many snake species live in Middlesex County, Massachusetts?
- 10+ snake species have verified records in Middlesex County, Massachusetts, of which 2 are venomous.
- What is the most commonly seen snake in Middlesex County, Massachusetts?
- The Common Garter Snake is the most frequently reported snake in Middlesex County, Massachusetts, based on verified wildlife observations.
- What should I do if I see a venomous snake in Middlesex County, Massachusetts?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.