Missouri
Snakes in Madison County
11 species have been documented here, 3 of them venomous.
Venomous snakes in Madison 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.
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy 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 Madison County
Common Watersnake
Nerodia sipedon
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Western Ratsnake
Pantherophis obsoletus
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Madison County: FAQ
- Are there venomous snakes in Madison County, Missouri?
- Yes. 3 venomous snake species have verified records in Madison County, Missouri, including Eastern Copperhead, Northern Cottonmouth, Timber Rattlesnake. Most snakes in Madison County, Missouri, however, are harmless.
- How many snake species live in Madison County, Missouri?
- 11 snake species have verified records in Madison County, Missouri, of which 3 are venomous.
- What is the most commonly seen snake in Madison County, Missouri?
- The Common Watersnake is the most frequently reported snake in Madison County, Missouri, based on verified wildlife observations.
- What should I do if I see a venomous snake in Madison County, Missouri?
- 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.