Connecticut
Snakes in Hartford County
11 species have been documented here, 2 of them venomous.
Venomous snakes in Hartford 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 Hartford County

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Eastern Ratsnake
Pantherophis alleghaniensis
Harmless

North American Racer
Coluber constrictor
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Ring-necked Snake
Diadophis punctatus
Harmless

Timber Rattlesnake
Crotalus horridus
Venomous

Common Ribbon Snake
Thamnophis saurita
Harmless

Smooth Greensnake
Opheodrys vernalis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Hartford County: FAQ
- Are there venomous snakes in Hartford County, Connecticut?
- Yes. 2 venomous snake species have verified records in Hartford County, Connecticut, including Eastern Copperhead, Timber Rattlesnake. Most snakes in Hartford County, Connecticut, however, are harmless.
- How many snake species live in Hartford County, Connecticut?
- 11 snake species have verified records in Hartford County, Connecticut, of which 2 are venomous.
- What is the most commonly seen snake in Hartford County, Connecticut?
- The Common Garter Snake is the most frequently reported snake in Hartford County, Connecticut, based on verified wildlife observations.
- What should I do if I see a venomous snake in Hartford County, Connecticut?
- 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.