The 10 Biggest Casinos in the US

WinStar World Casino and Resort has the largest officially published gaming-floor figure in this comparison: nearly 400,000 square feet (about 37,161 square metres). Mohegan Sun follows with more than 300,000 square feet (27,871 square metres), while Thunder Valley reports 270,000 square feet (25,084 square metres).

No U.S. regulator publishes one current, property-by-property casino-floor workbook for the whole country. This ranking therefore compares the latest usable figures published by casino operators, an official state tourism agency, and the Nevada Gaming Control Board. It covers gaming space rather than the total resort footprint.

The 10 biggest U.S. casinos by published gaming space

Figures were revalidated on July 24, 2026. Square-metre values are conversions from the published square-foot figures and are rounded to the nearest square metre. “Nearly,” “more than,” and “+” preserve the source’s original level of precision.

1. WinStar World Casino and Resort - nearly 400,000 sq ft (about 37,161 m²)

WinStar describes nearly 400,000 square feet of gaming floor across nine city-themed gaming plazas. The Chickasaw Nation property also lists more than 10,000 electronic games, 100 table games, a 55-table poker room, bingo, off-track betting, and high-stakes rooms.

The ranking uses WinStar’s current floor figure rather than the larger number repeated in older articles. Its operator now presents “nearly 400,000 square feet” as the gaming-floor size, so that is the comparable figure used here.

2. Mohegan Sun - more than 300,000 sq ft (27,871 m²)

Mohegan Sun publishes more than 300,000 square feet of gaming space across Casino of the Earth and Casino of the Sky, including smoke-free areas. The figure covers the casino areas rather than its 130,000-square-foot retail complex or more than 375,000 square feet of meeting and function space.

Because the operator states only a lower bound, 300,000 square feet converts to 27,871 square metres and the actual gaming area is larger. That rounded claim is sufficient to place Mohegan Sun above Thunder Valley, but it is not precise enough for close comparisons with another property near the same size.

3. Thunder Valley Casino Resort - 270,000 sq ft (25,084 m²)

Thunder Valley’s current FAQ reports 270,000 square feet of gaming space. It describes about 3,500 slot and video machines, 90 table games, a poker room, and a bingo room within that area.

The same page separately identifies The Venue as a 150,000-square-foot entertainment facility. That separation matters: the 270,000-square-foot ranking figure is gaming space and does not absorb the concert venue.

4. Seminole Hard Rock Hotel & Casino Tampa - 245,000 sq ft (22,761 m²)

Seminole Hard Rock Tampa continues to publish a 245,000-square-foot figure for its gaming space. The property’s 2019 expansion announcement defines the completed casino at the same size, including slots, table games, and the poker room.

A May 2026 property update listed about 5,230 slot machines and more than 175 table games. Counts can change faster than walls do, so they are useful context but are not used to rank floor size.

5. Riverwind Casino - 219,000 sq ft (20,346 m²)

Oklahoma’s official tourism site lists Riverwind as a 219,000-square-foot gaming facility. It identifies the Chickasaw Nation as the operator and describes electronic games, table games, MegaKeno, and off-track betting.

Riverwind’s own overview uses a larger 287,000-square-foot figure for the property’s “attractions,” not specifically for gaming. The narrower official-tourism gaming figure is the more comparable number for this list.

6. Soaring Eagle Casino & Resort - 210,000+ sq ft (19,510+ m²)

Soaring Eagle describes a casino floor of more than 210,000 square feet, with slots, live table games, poker, bingo, high-limit gaming, and a sportsbook. The operator also calls it Michigan’s largest gaming floor.

The table keeps the plus sign because the source presents 210,000 square feet as a threshold rather than an exact measurement. The metric equivalent is therefore more than 19,510 square metres.

7. Pechanga Resort Casino - 200,000 sq ft (18,581 m²)

Pechanga publishes 200,000 square feet of gaming space and describes the casino as entirely smoke-free. Its gaming page lists slots, table games, high-limit rooms, and private gaming rooms within the floor.

The operator separately reports 275,000 square feet of indoor and outdoor meeting space, a theater, an events center, a spa, hotel rooms, and other resort amenities. Those areas are excluded from the casino-size figure.

8. Wynn Las Vegas - 196,232 sq ft (18,231 m²)

Wynn is the largest Nevada casino in the state’s fiscal-year 2025 square-footage workbook. Its total combines 67,802 square feet (6,299 m²) for pit games, 113,314 square feet (10,527 m²) for slots, 7,780 square feet (723 m²) for race and sports, and 7,336 square feet (682 m²) for poker and pan.

The regulatory figure is more precise than a rounded resort marketing claim. It also makes clear which gaming categories contribute to the total.

9. The Venetian Resort Las Vegas - 166,194 sq ft (15,440 m²)

The Nevada workbook reports 51,084 square feet (4,746 m²) for pit games, 105,141 square feet (9,768 m²) for slots, and 9,969 square feet (926 m²) for poker and pan at The Venetian. These categories total 166,194 square feet.

The figure does not include hotel rooms, shops, restaurants, convention facilities, or other non-gaming parts of the integrated resort.

10. MGM Grand - 156,524 sq ft (14,542 m²)

MGM Grand closes the documented top ten with 156,524 square feet of state-reported gaming space. The total consists of 29,240 square feet (2,716 m²) for pit games, 115,479 square feet (10,728 m²) for slots, 6,005 square feet (558 m²) for race and sports, and 5,800 square feet (539 m²) for poker and pan.

Bellagio is only 524 square feet (49 m²) behind at 156,000 square feet (14,493 m²), making it the first property below this ranking’s documented cutoff.

Why Foxwoods and Choctaw Durant are not ranked

Foxwoods is a nine-million-square-foot destination resort with multiple casino floors, but its current property fact sheet does not publish one combined gaming-floor area. It gives game counts and individual figures for the 30,000-square-foot (2,787 m²) bingo hall and 12,000-square-foot (1,115 m²) sportsbook. Adding selected rooms would still omit other casino floors, so it would not produce a comparable total.

Choctaw Casino & Resort-Durant publishes more than 7,400 slot machines, more than 100 table games, and a poker room. Its current pages do not attach one total square-foot figure to all gaming floors, and the property has expanded several times since the 100,000-square-foot casino described in its 2006 history.

Both properties may be larger than casinos in the numbered list. Leaving them unranked avoids treating an old expansion figure, the entire resort, or a machine count as if it were a current gaming-floor measurement.

How this ranking was built

The comparison follows four rules:

• Gaming area only. Hotel, retail, convention, pool, restaurant, theater, and total resort space are excluded.
• Current source first. A current operator page or regulator dataset takes priority over an older fact sheet or repeated third-party claim.
• Published precision is preserved. Rounded claims stay rounded; lower bounds remain “more than” or “+.”
• No estimate from game counts. Slot and table counts do not translate consistently into floor area because aisle width, room layout, poker, bingo, sportsbooks, and non-public support areas differ.

Nevada’s three entries come from one regulatory workbook, while tribal properties in other states generally publish their own definitions. A property may count bingo, poker, a sportsbook, or adjacent entertainment differently. The list is therefore a sourced comparison of published gaming-space figures, not a national architectural survey.

Why other U.S. casino-size lists differ

• Older figures remain online. Expansions and reconfigurations can make a once-accurate number stale.
• Some lists rank the whole resort. A large hotel or convention center can move a property upward without adding gaming space.
• Rounded marketing claims hide close gaps. “More than 300,000” cannot support square-foot precision.
• Definitions vary. One property may include bingo or entertainment while another reports only the main casino floor.
• Major casinos publish no total. Foxwoods and Choctaw Durant illustrate why a definitive national census cannot be reconstructed from public pages alone.

Biggest does not mean best

Floor area does not measure game rules, return to player, table minimums, accessibility, smoke policy, crowding, service, or value. A smaller casino can be a better choice if it offers the desired game at suitable limits and in a more comfortable environment.

Check the property’s current game information before travelling. Poker rooms, bingo sessions, table games, and smoke-free areas can change even when the published building area stays the same.

Sources

• WinStar World Casino and Resort: About
• Mohegan Sun: About Mohegan Sun
• Thunder Valley Casino Resort: Frequently Asked Questions
• Seminole Hard Rock Tampa: May 2026 property update
• Seminole Hard Rock: 2019 completed-casino definition
• TravelOK: Riverwind Casino listing
• Soaring Eagle Casino & Resort: Casino Games
• Pechanga Resort Casino: About Us
• Nevada Gaming Control Board: FY2025 property square-footage workbook
• Foxwoods Resort Casino: current property fact sheet
• Choctaw Casino & Resort-Durant: current property page
• Choctaw Casino & Resort-Durant: property expansion history