Are There Opossums in South Dakota?
Opossums are rare and uncommon in South Dakota, found only in the easternmost counties at the northern edge of their range. Most sightings occur in eastern riparian areas and river valleys. If you see an opossum in South Dakota, you have spotted a truly unusual visitor.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
Virginia Opossum · Public domain CC0
Virginia Opossum · Public domain CC0
Eastern Virginia Opossum · Millie Basden CC BY
- 50
- GBIF records
Yes, opossums are in South Dakota. Next you'll want:
Opossums are rare and uncommon in South Dakota, found only in the easternmost counties at the northern edge of their range. Most sightings occur in eastern riparian areas and river valleys. If you see an opossum in South Dakota, you have spotted a truly unusual visitor.
Where Opossums Are Rare in South Dakota
Opossums are at the extreme northern limit of their range in South Dakota, making them exceptionally rare in the state. When they do appear, they are found only in the easternmost counties and river valleys. The Missouri River valley in central and eastern South Dakota represents the northern frontier of their established range. Counties along the Big Sioux River and other eastern waterways occasionally host individuals. These appearances are typically sporadic and represent dispersing young opossums searching for new territory. The state's cold winters and continental climate make permanent opossum populations unlikely except in the mildest riparian corridors. Western South Dakota is far too cold and dry for opossums. Even in favorable eastern locations, opossums are transient rather than year-round residents. Most sightings are accidental encounters. Opossums reaching South Dakota have likely traveled north from Iowa and Missouri along river systems. For more wildlife information, visit theSouth Dakota wildlife hub.
Seasonal Presence and Winter Survival
Any opossums that reach South Dakota are unlikely to survive harsh winters. Most sightings occur during late summer and fall when young males disperse seeking new territory. These wandering individuals may drift northward along river valleys but rarely establish permanent populations. Once winter arrives, survival becomes extremely difficult. South Dakota winters with temperatures dropping well below freezing and extended snow cover exceed what opossums can tolerate. Unlike mammals adapted to harsh winters, opossums lack thick fur and adequate body fat reserves. Frostbite on their exposed ears and tails is common even in moderate cold. If an opossum reaches South Dakota, it would need to find exceptional shelter such as a heated structure or extensive den system. Spring might bring occasional sightings as individuals attempt to expand northward, but none are expected to remain through the subsequent winter. The state's climate represents a hard barrier to opossum range expansion. Visitthe wildlife guideto learn about mammals actually adapted to South Dakota.
How to Identify an Opossum If You Encounter One
If you see an opossum in South Dakota, you will recognize it by its distinctive white pointed face, grayish-brown fur, and long hairless tail. These features make opossums unmistakable once you observe them clearly. They are roughly cat-sized, weighing four to fourteen pounds, with a stocky, low-slung body. Their pointed snout and rounded ears give them a distinctive profile. Their white face contrasts sharply with their grayish body. The tail is thin, rat-like, and hairless, quite different from the bushy tails of South Dakota raccoons. Opossums have short legs and move with a distinctive slow shuffle. They are primarily nocturnal and travel on the ground, though they can climb trees. If surprised during the day, they may hiss and bare their teeth in a threat display. Their overall appearance is quite different from native South Dakota marsupials or other common mammals. Checkour opossum guidefor detailed identification information.
Where Rare South Dakota Sightings Concentrate
The few opossum sightings in South Dakota concentrate along river corridors and riparian zones in the eastern portion of the state. The Big Sioux River drainage, which forms the border with Iowa, has recorded rare opossum sightings. The Missouri River valley provides the main dispersal corridor northward. Urban and suburban areas in eastern cities like Sioux Falls might occasionally attract a stray opossum. Any sighting would be noted as unusual and noteworthy by local wildlife observers. These sightings are not regular or predictable. Rather than having established local populations, opossums in South Dakota are essentially lost individuals far from their normal range. The nearest stable opossum populations exist in Iowa, Missouri, and Arkansas. South Dakota represents a geographic dead-end for northward-wandering opossums. Cold winters prevent establishment of breeding populations. Anyone spotting an opossum in South Dakota should report it to the South Dakota Game, Fish and Parks department. Such observations help scientists understand range expansion patterns. Learn more aboutSouth Dakota wildlifeon our site.
Opossum Behavior and Diet
Opossums are primarily nocturnal scavengers that will eat almost anything available. They consume insects, earthworms, snails, small rodents, and carrion. They also eat vegetation, nuts, berries, and garbage. Opossums are largely immune to rabies due to their lower body temperature. They are generally solitary animals that have large home ranges. When threatened, they employ their famous defense mechanism of playing dead, entering a catatonic state called thanatosis. They produce a foul-smelling liquid from anal glands when stressed. Opossums are excellent climbers and rest in trees or elevated spaces during daylight hours. They are non-aggressive toward humans and prefer fleeing or playing dead over confronting threats. Unlike most animals, they do not store fat for winter survival. This makes South Dakota's long winters particularly lethal. An opossum stranded in South Dakota would struggle to find adequate shelter and food during winter months. They are adapted to temperate climates with mild winters, not the harsh continental weather of the Upper Midwest.
Dealing With Rare Opossum Encounters
If you encounter an opossum in South Dakota, the animal is likely lost or dispersing from its home range. Do not attempt to capture or harm it. Opossums are not aggressive and pose no threat. They are protected by South Dakota law. If found in a building, open doors and windows to allow it to leave naturally. Most opossums will exit on their own given the opportunity. Do not corner or threaten the animal, which may enter a defensive catatonic state. Approach slowly and calmly. If the opossum cannot leave on its own, contact a licensed wildlife removal service rather than attempting removal yourself. Report any sighting to South Dakota Game, Fish and Parks, as opossum observations help scientists track range changes. Do not feed the animal or provide water unless it appears injured. Wildlife biologists are interested in documenting opossum presence in South Dakota. Your observation may contribute to our understanding of northward range expansion. Checkour wildlife resourcesfor more information.
Species Confused With Opossums
Opossums could potentially be confused with several other South Dakota animals. Raccoons are similar in size but have a distinctive black mask and ringed tail. Raccoons are also much more aggressive. Woodchucks are stockier, lack the long tail, and are daytime animals. Rats and mice are much smaller. Muskrats are primarily aquatic and smaller. Skunks are stockier and have bold white stripes. Young raccoons might superficially resemble young opossums, but the distinctive white pointed face, long hairless tail, and gray coloring of opossums make them fairly distinctive. Their slow shuffle and hunched posture distinguish them from other mammals. No other South Dakota mammals have the combination of white facial markings, long hairless tail, and pointed snout. The distinctive features of an opossum make misidentification unlikely for anyone who observes one clearly. If uncertain about an identification, photographs help wildlife officials confirm sightings.
Frequently Asked Questions
Why are opossums so rare in South Dakota? Opossums are at the northern edge of their range, and South Dakota winters are far too cold for survival. Would an opossum ever establish a permanent population here? Unlikely, as the climate is incompatible with opossum survival through winter. Do opossums migrate? No, they do not migrate, but young individuals disperse looking for new territory and may wander north. What should I do if I find an opossum? Report it to South Dakota Game, Fish and Parks and allow it to leave naturally. Are opossums dangerous? No, opossums are harmless and non-aggressive. Could climate change allow opossum range expansion northward? Possibly, but South Dakota winters would need to become significantly milder. Is it legal to keep an opossum as a pet in South Dakota? No, keeping wild opossums as pets is illegal.
Plan your opossum sighting in South Dakota
50 verified opossum records have been logged in South Dakota, most recently in 2026. See the GBIF records.
Where to look in South Dakota
- Badlands National Park · Wildlife Watching, Birdwatching · Find hotels
- Jewel Cave National Monument · Wildlife Watching, Birdwatching · Find hotels
- Lewis & Clark National Historic Trail · Wildlife Watching · Find hotels
- Missouri National Recreational River · Wildlife Watching, Birdwatching · Find hotels
- Wind Cave National Park · Wildlife Watching, Birdwatching · Find hotels
- Minuteman Missile National Historic Site · Find hotels
More places to see opossum
More wildlife in South Dakota