Tennessee
Snakes in Williamson County
18 species have been documented here, 3 of them venomous.
Venomous snakes in Williamson County
Full guide & what to do if bitten →
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Williamson County
Gray Ratsnake
Pantherophis spiloides
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Black Kingsnake
Lampropeltis nigra
Harmless
Queensnake
Regina septemvittata
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
North American Racer
Coluber constrictor
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Ring-necked Snake
Diadophis punctatus
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Red-bellied Snake
Storeria occipitomaculata
Harmless
Common Ribbon Snake
Thamnophis saurita
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Williamson County: FAQ
- Are there venomous snakes in Williamson County, Tennessee?
- Yes. 3 venomous snake species have verified records in Williamson County, Tennessee, including Timber Rattlesnake, Eastern Copperhead, Northern Cottonmouth. Most snakes in Williamson County, Tennessee, however, are harmless.
- How many snake species live in Williamson County, Tennessee?
- 10+ snake species have verified records in Williamson County, Tennessee, of which 3 are venomous.
- What is the most commonly seen snake in Williamson County, Tennessee?
- The Gray Ratsnake is the most frequently reported snake in Williamson County, Tennessee, based on verified wildlife observations.
- What should I do if I see a venomous snake in Williamson County, Tennessee?
- 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.