Custer State Park Buffalo Roundup Statistics (2026)

Like the Sturgis Motorcycle Rally, the Buffalo Roundup is frequently described with loose estimations and unverified web trivia. This page serves as the definitive reference dataset for researchers, journalists, travelers, and conservationists.

Every statistic below links directly to the South Dakota Department of Game, Fish and Parks (SD GFP), Bradeen Real Estate & Auctions, the National Park Service, or the South Dakota State Historical Society.

Attendance & Spectator Records

South Dakota Game, Fish and Parks tracks spectator vehicles and gate entries at the two official entry checkpoints (North and South viewing areas). The event has grown from an internal ranch management task in the 1960s to one of North America's most watched free public wildlife spectacles.

• 24,178 registered spectators in 2024 set the all-time attendance record for the 59th Annual Custer State Park Buffalo Roundup on September 27, 2024. (South Dakota Parks and Wildlife Foundation)
• 22,690 spectators in 2023 was the previous historic high, marking two consecutive years of record-breaking crowds at the park. (South Dakota Parks and Wildlife Foundation)
• Over 21,000 visitors in 2015 attended the milestone 50th Anniversary Buffalo Roundup, which was the first edition to cross the 20,000-spectator threshold. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 5,000+ vehicles parked across the North and South viewing areas on roundup morning, requiring coordinated traffic control by SD Highway Patrol and park rangers. (SD GFP Custer State Park Management Plan)
• 6:15 a.m. gate opening with parking lots regularly reaching capacity and closing by 9:00 a.m. prior to the 9:30 a.m. herd drive. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 150 to 175 artisan and food vendors participate in the concurrent 3-day Buffalo Roundup Arts Festival held across from the Peter Norbeck Outdoor Education Center. (Travel South Dakota / SD Dept of Tourism)
• Lame Johnny Road dedicated motorcoach routing guides all tour buses directly into designated South parking to ensure smooth traffic flow through the park. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• $0 park entrance fee on Roundup Friday as state park entrance license requirements are waived for the entire day, saving spectators the standard $20 per-vehicle fee. (SD Game, Fish & Parks (GFP) Buffalo Roundup)

Herd Population & Range Ecology

The primary purpose of the Roundup is biological rangeland management. Left unchecked, a bison population in an enclosed 71,000-acre park would multiply beyond the vegetative carrying capacity of the land, degrading native grasses and starving other native ungulates like elk, pronghorn, and bighorn sheep.

• 1,400 to 1,500 total bison make up the Custer State Park herd during the summer and early fall, one of the largest publicly owned, free-roaming herds in the world. (SD GFP Custer State Park Management Plan)
• 950 to 1,000 target winter carrying capacity is the scientifically managed population ceiling determined by park rangeland biologists to preserve native prairie forage. (SD GFP Custer State Park Management Plan)
• 71,000 acres of protected habitat in Custer State Park provide grazing range shared between bison, elk, pronghorn, bighorn sheep, and mule deer. (SD GFP Custer State Park Management Plan)
• 350 to 450 calves born annually each spring between April and June, replenishing the herd and driving the annual surplus requiring fall management. (SD GFP Custer State Park Management Plan)
• 100% of the herd swept into corrals during the annual roundup to undergo veterinary health screening, brucellosis testing, vaccination, and sorting. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 10 to 15 pounds of dry forage per day is consumed by an adult bison (rising to 24–30 lbs of green summer grass), highlighting why maintaining range forage balance is vital to ecological sustainability. (National Park Service (Bison Bellows Series & Biological Specs))

The Fall Classic Bison Auction Economics

Conducted annually on the first Saturday in November by Bradeen Real Estate & Auctions, the Custer State Park auction serves two essential goals: selling surplus animals to maintain the range's winter target of 950–1,000 head, and distributing pure, disease-tested American bison genetics to private producers and conservation herds.

• $885,425 gross sales in 2024 at the 59th Annual Fall Classic Bison Auction, generating crucial operational funding for Custer State Park and wildlife programs. (Bradeen Real Estate & Auctions (Official GFP Auctioneer))
• 482 bison sold in 2024 at an average price of $1,836.98 per head across all animal age and sex classes. (Bradeen Real Estate & Auctions (Official GFP Auctioneer))
• $633,700 gross sales in 2023 with 498 head sold at an average price of $1,272.49 per animal. (Bradeen Real Estate & Auctions (Official GFP Auctioneer))
• 87% increase in average price per head from 2022 to 2024 rising from $982.21 per head in 2022 to $1,836.98 in 2024 due to high national demand for proven breeding stock and bison genetics. (Bradeen Real Estate & Auctions (Official GFP Auctioneer))
• 100% of auction proceeds reinvested directly into Custer State Park maintenance, trail systems, habitat restoration, and conservation staff. (SD GFP Custer State Park Management Plan)
• Bidders from 20+ states participate both in person at the park corrals and via live online broadcast through Bradeen Real Estate & Auctions. (Bradeen Real Estate & Auctions (Official GFP Auctioneer))
• Held annually on the first Saturday of November giving buyers time to arrange livestock transport following testing and quarantine protocols. (SD GFP Annual Fall Classic Bison Auction)

Roundup Operations & Wrangler Logistics

Corralling 1,500 wild bison across rough Black Hills terrain requires precision teamwork. The roundup crew combines experienced park wranglers, South Dakota Department of Game, Fish and Parks conservation officers, and 40 skilled volunteer horseback riders selected through an annual public lottery.

• 60 official horseback riders make up the roundup team, consisting of approximately 20 full-time park staff and wranglers alongside 40 volunteer riders selected by public lottery. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• Hundreds of rider applications submitted annually for the coveted volunteer slots, which require advanced horsemanship skills and mandatory pre-roundup safety orientation. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 5-mile herd drive distance covered by riders pushing the herd across rolling grasslands into the corral system over roughly two hours on Friday morning. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 1:00 p.m. to 3:00 p.m. Friday corral chute operations open to the public for close-up viewing of testing, branding, and vaccinating, with park crews working the remainder of the herd in October. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• French Creek Horse Camp serves as the official staging and campground base for the roundup riders and their mounts at $44/night. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• Electronic RFID ear tagging & microchipping is administered to every newly gathered calf at the corral chutes for lifetime health tracking. (SD GFP Custer State Park Management Plan)
• 5-way respiratory & blackleg vaccinations are administered to calves and yearlings while moving through the hydraulic chute handling facility. (SD GFP Custer State Park Management Plan)
• Zero spectator injuries inside designated viewing zones maintained across the modern history of the event through robust perimeter fencing and law enforcement oversight. (SD Game, Fish & Parks (GFP) Buffalo Roundup)

Bison Biology & Safety Specifications

American bison (Bison bison) are the largest terrestrial mammals in North America. Understanding their athletic capability and temperament explains why the state park enforces strict physical barriers and safety buffers during the roundup.

• 35 to 40 mph top running speed can be achieved by full-grown bison, three times faster than an average human running speed. (National Park Service (Bison Bellows Series & Biological Specs))
• Up to 2,000 pounds (1 ton) is the mature weight of an adult male bison (bull), while adult females (cows) weigh 900 to 1,200 pounds. (National Park Service (Bison Bellows Series & Biological Specs))
• 6-foot vertical jumping capability allows adult bison to clear standard livestock fences from a standstill. (National Park Service (Bison Bellows Series & Biological Specs))
• 100 yards (300 feet) minimum distance is the state park wildlife safety rule for viewing bison during regular days outside corral events. (SD GFP Custer State Park Management Plan)
• 285-day gestation period roughly 9.5 months, resulting in single calf births in late spring with reddish-orange coats (often called "red dogs"). (National Park Service (Bison Bellows Series & Biological Specs))
• 15 to 20+ year lifespan in protected rangeland environments like Custer State Park. (National Park Service (Bison Bellows Series & Biological Specs))

Regional Tourism & Economic Impact

While Sturgis drives August travel in the Northern Black Hills, the Buffalo Roundup serves as the economic anchor for the Southern Black Hills in late September. It creates a high-yield shoulder-season surge before winter closures.

• 2.1 million annual visitors enter Custer State Park each year, with late September generating one of the highest concentrated weekend influxes of the fall season. (Travel South Dakota / SD Dept of Tourism)
• $6 million to $8 million estimated economic impact generated across Custer County and the Southern Black Hills in lodging, dining, fuel, and retail during Roundup week. (Travel South Dakota / SD Dept of Tourism)
• 95% to 100% hotel occupancy recorded across Custer, Hill City, and Keystone during Roundup weekend, with rooms booked 6 to 9 months in advance. (Travel South Dakota / SD Dept of Tourism)
• Second busiest event in the Black Hills behind only the Sturgis Motorcycle Rally in August, providing a vital economic shoulder-season surge before winter. (Travel South Dakota / SD Dept of Tourism)

Conservation Milestones: 1914 to 2026

The Custer State Park herd is one of the foundational preservation successes in American conservation history. From 36 animals saved from the brink of total species extermination in 1914 to a thriving, genetically pure population of 1,500 today, the herd represents more than a century of stewardship.

• Founded in 1914 with 36 bison purchased by the State of South Dakota (6 bulls, 18 cows, 12 calves) from the estate of pioneer conservationist James "Scotty" Philip. (South Dakota State Historical Society)
• Rescued from near extinction in 1881 when Pete Dupree captured 5 wild bison calves on the Grand River, which later formed the foundation of the Scotty Philip herd. (South Dakota State Historical Society)
• 1919 Custer State Park establishment under South Dakota Governor Peter Norbeck, who envisioned a permanent wildlife sanctuary in the Black Hills. (South Dakota State Historical Society)
• 1965: First organized modern Buffalo Roundup initiated by park managers to corral the burgeoning herd and prevent devastating overgrazing of park grasslands. (SD Game, Fish & Parks (GFP) Buffalo Roundup)
• 1966: First public Buffalo Auction held establishing the annual live auction model to distribute surplus bison genetics to private ranches and public conservation herds nationwide. (SD GFP Annual Fall Classic Bison Auction)
• 61st Annual Edition in 2026 scheduled for Friday, September 25, 2026, continuing more than six decades of continuous wildlife management tradition. (SD Game, Fish & Parks (GFP) Buffalo Roundup)