Top 10 Biggest Casinos in America (2026) - Ranked by Size

Top 10 Biggest Casinos in America (2026)

When you think of huge casinos, Las Vegas usually comes to mind first. But the actual biggest casinos in America are located in Oklahoma, Connecticut, and California. The largest one, WinStar World Casino & Resort in Thackerville, Oklahoma, has 600,000 square feet of gaming space and 1,399 hotel rooms, making it the biggest casino not just in the U.S. but anywhere in the world.

WinStar World Casino & Resort in Thackerville, Oklahoma leads the list with 600,000 square feet of gaming space and 1,399 hotel rooms. Opened in 2004 and located near the Texas border, this massive resort has thousands of slot machines, dozens of table games, and many dining options including buffets and fine restaurants, drawing gamblers from across the South.

Mohegan Sun in Uncasville, Connecticut comes in second with 364,000 square feet of gaming space and over 1,500 hotel rooms. Founded by the Mohegan Tribe in 1996, it has had three major expansions and includes a 3,000-seat concert venue that hosts famous artists, a 60,000-square-foot spa, and over 100 dining options ranging from food courts to upscale restaurants.

Foxwoods Resort Casino in Ledyard, Connecticut ranks third with 340,000 square feet of gaming space and about 2,500 hotel rooms. Operated by the Mashantucket Pequot Tribe, this resort is actually the biggest casino in North America by total property size and includes multiple hotels, a golf course, and over 50 restaurants and bars for visitors.

Yaamava’ Resort & Casino in Highland, California holds the fourth spot with 290,000 square feet of gaming space and around 400 hotel rooms. Formerly called San Manuel Casino, it recently finished a major expansion and now attracts gamblers from Los Angeles with its nearly 3,000 slot machines, 140 table games, and multiple dining venues including a food court and steakhouse.

Thunder Valley Casino Resort in Lincoln, California ranks fifth with 250,000 square feet of gaming space and about 400 hotel rooms. Located less than 50 miles from Sacramento, it features over 5,600 slot machines, 150 table games, a 200,000-square-foot outdoor pool area, and more than 20 dining options including a buffet and fine dining restaurant.

Seminole Hard Rock Hotel & Casino Tampa in Florida is the sixth largest with 240,000 square feet of gaming space and around 900 hotel rooms. As Florida’s largest casino, it features the iconic guitar-shaped Hard Rock building, a 14,000-seat live music venue, a 30,000-square-foot spa with 50 treatment rooms, and over 40 dining options including celebrity chef restaurants.

River Wind Casino in Norman, Oklahoma comes in seventh with 219,000 square feet of gaming space and about 100 hotel rooms. This Oklahoma gaming hub includes the 1,500-seat Showpiece Theatre that has hosted famous acts like BB King and ZZ Top, over 2,500 slot machines, 60 table games, and 10 dining venues including a buffet and steakhouse.

Choctaw Casino & Resort in Durant, Oklahoma ranks eighth with 219,000 square feet of gaming space and over 1,700 hotel rooms. Matching River Wind in size, it offers one of the largest hotel inventories among top casinos, with more than 3,000 slot machines, 100 table games, an 18-hole golf course, and 15 dining options ranging from casual to upscale.

River Spirit Casino Resort in Tulsa, Oklahoma is ninth with 212,000 square feet of gaming space and 483 hotel rooms. This Oklahoma giant features over 2,700 slot machines, 75 table games, a 50,000-square-foot event center, multiple pools, and more than 12 dining options including a buffet, steakhouse, and casual restaurants for all visitors.

Encore Boston Harbor in Everett, Massachusetts rounds out the top 10 with about 210,000 square feet of gaming space and 671 hotel rooms. Unlike most top-10 casinos operated by Native tribes, this is a commercial luxury casino featuring high-end finishes, over 2,300 slot machines, 100 table games, a 10,000-square-foot spa, and 11 dining options including celebrity chef restaurants.

Four of the top 10 biggest casinos are in Oklahoma, showing the state’s dominance in large-scale gambling. No Las Vegas casinos appear in the top 10, meaning Nevada’s famous gambling capital doesn’t have the largest U.S. casinos by gaming space. Most top casinos are operated by Native American tribes, and WinStar is the largest casino worldwide, not just in America.

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