Top 15 Biggest Las Vegas Casino Resorts

Las Vegas holds a remarkable concentration of the largest hotels on the planet. Several of the properties below have more rooms than entire British cities have hotel beds, and they exist at that scale for one specific reason. The room isn’t the product.

This list ranks resorts by room count, which is the measure the industry itself uses and the only one with reasonably comparable public figures. Casino floor area gets quoted where it’s useful, but operators measure it inconsistently enough that ranking by it would be meaningless.

The biggest Las Vegas hotels at a glance

*Each entry is explained in full below.*

How we ranked the biggest Las Vegas hotels

Ranked by approximate room count as reported by the operator. Connected properties operating as a single resort complex are counted together where the operator presents them that way, and we note where that affects the ranking.

The 15 biggest Las Vegas hotels in detail

1. The Venetian and The Palazzo, approximately 7,100 rooms

Operated as one connected complex and, taken together, among the largest hotel operations anywhere on earth. Every room is a suite, which is unusual at this scale and is the property’s central marketing claim.

The complex also contains one of the largest convention and exhibition facilities in the United States, and that’s the real business. Las Vegas is a conference destination with casinos attached, and this property demonstrates it more clearly than any other.

2. MGM Grand, approximately 6,850 rooms

Frequently cited as the largest single hotel in the world by room count, and among the largest buildings by floor area in the United States.

It opened in 1993 with an entrance that required visitors to walk through the mouth of an enormous lion. A significant number of Chinese players declined, on the reasonable basis that entering the jaws of a beast is an inauspicious way to begin a gambling session. The entrance was rebuilt.

One of the more instructive stories in casino design, and a reminder that a building this size can be defeated by a superstition its architects never considered.

3. Wynn Las Vegas and Encore, approximately 4,750 rooms

Two connected towers at the north end of the Strip, developed by Steve Wynn and opened in 2005 and 2008.

The property sits at the luxury end and has consistently drawn a higher-spending customer than its neighbours. It also broke with the theming convention that defined the Strip through the 1990s, and most subsequent development followed.

4. Luxor, approximately 4,400 rooms

The pyramid, opened in 1993, and the most architecturally distinctive building on the Strip. Rooms are arranged around a hollow interior atrium, and the original lifts travelled at an angle up the sloping walls.

The beam projected from its apex is among the brightest artificial light sources on earth.

It’s a genuinely strange building. There is nothing else quite like it in the hotel industry.

5. Aria, approximately 4,000 rooms

The centrepiece of CityCenter, opened in 2009 as part of one of the largest privately funded construction projects in American history.

Aria marks the point where Strip development moved decisively away from theming towards contemporary architecture. That’s now the prevailing approach.

6. Excalibur, approximately 3,980 rooms

A castle, opened in 1990, and one of the properties that defined the family-friendly theming era.

It’s also where the largest slot jackpot in history was won: $39.7 million on a Megabucks machine in 2003, from a stake of around $100.

7. Caesars Palace, approximately 3,960 rooms

Opened in 1966 and arguably the most culturally significant property on the Strip. It established the idea that a casino could be an immersive themed environment rather than a hotel with gaming tables in it.

Almost every resort built on the Strip in the following forty years is a response to Caesars in some way, whether through imitation or reaction against it.

8. Bellagio, approximately 3,950 rooms

Opened in 1998 and generally regarded as the property that began the Strip’s shift upmarket after the family-theming period.

Its fountains have become the most photographed feature in Las Vegas and are free to watch, which is precisely the point. The resort economy runs on getting people through the door.

9. Circus Circus, approximately 3,770 rooms

Opened in 1968, and the original attempt to make a Las Vegas casino family-friendly by putting a circus above the gaming floor.

It has outlasted most of its contemporaries and now sits at the older, cheaper end of the Strip. Its longevity is notable in a city that demolishes its own history with unusual enthusiasm.

10. Resorts World Las Vegas, approximately 3,500 rooms

Opened in 2021, the first entirely new resort built on the Strip in over a decade, and a substantial bet on Las Vegas after the pandemic.

It runs multiple hotel brands inside a single building, which is now a common approach at this scale.

11. Flamingo, approximately 3,460 rooms

The oldest surviving resort on the Strip, opened in 1946, though almost nothing of the original structure remains.

Its historical significance is wildly out of proportion to its current position in the market. The Flamingo is where the modern Las Vegas resort concept began, and the story of its financing and early years is the founding myth of the city.

12. Mandalay Bay, approximately 3,200 rooms

Opened in 1999 at the southern end of the Strip, including the separately branded Delano tower and a large convention centre.

Like the Venetian, its business is substantially conference and events rather than gaming, which is the direction the entire Strip has moved.

13. Paris Las Vegas, approximately 2,900 rooms

Opened in 1999 with a half-scale Eiffel Tower rising through the building, and one of the last major properties of the theming era.

The tower’s legs come down through the casino floor, which is either charming or absurd depending on your view of the period.

14. Treasure Island, approximately 2,880 rooms

Opened in 1993 alongside Luxor and Excalibur, in the burst of construction that transformed the Strip in the early 1990s.

It originally staged a full-scale pirate battle in front of the property several times a day. That was replaced, then discontinued entirely, which is a small illustration of how completely the family-entertainment era was abandoned.

15. Planet Hollywood, approximately 2,500 rooms

Built as the Aladdin and rebranded in 2007, occupying one of the most valuable positions on the Strip, opposite Bellagio.

Its repeated reinvention is characteristic of Las Vegas, where properties get renamed and reconceived rather than allowed to age.

Why Las Vegas hotels are this large

A room in Las Vegas has historically been priced to fill the building rather than to make money on its own. The revenue comes from what the occupant does after checking in.

That economic model justifies room counts inexplicable anywhere else. A hotel with seven thousand rooms only makes sense if each room is a delivery mechanism for gaming, dining, entertainment and conference spending.

The model has shifted substantially, though. Non-gaming revenue now exceeds gaming revenue on the Strip, which means the rooms increasingly do have to pay for themselves. Las Vegas room rates have risen accordingly, and anyone who visited fifteen years ago will have noticed.

Las Vegas and Macau

Macau overtook the Las Vegas Strip in gaming revenue in 2006 and has generated substantially more since, driven overwhelmingly by high-stakes baccarat rather than the mass-market slot floors that sustain Nevada.

Several of the operators on this list derive a significant share of their earnings from Macau, which leaves the largest American casino companies dependent on a market with entirely different rules, customers and political risks.

Conclusion: what the biggest Las Vegas hotels are actually selling

Look at what the top two properties have in common and it isn’t gaming. The Venetian and Mandalay Bay both anchor enormous convention centres, and the Venetian’s exhibition space is among the largest in the United States. The largest hotels on the Strip are, functionally, conference venues that happen to hold casino licences.

That’s the whole trajectory of the city compressed into a room count. Caesars in 1966 built an immersive gambling environment. Excalibur in 1990 built a castle for families. Aria in 2009 built contemporary architecture for adults with money. And non-gaming revenue has now overtaken gaming revenue on the Strip entirely, which means the seven-thousand-room hotel is no longer a device for filling a casino floor. It’s the business itself.

For a British reader the useful comparison is with entry eleven on our list of famous British casinos. Resorts World Birmingham is the closest thing Britain has to any of this, and it isn’t close. That gap isn’t commercial reluctance. It’s the direct result of the regional casino provisions in the Gambling Act 2005 being abandoned before anything got built.

Biggest Las Vegas hotels: frequently asked questions

What is the biggest hotel in Las Vegas?

The MGM Grand is generally cited as the largest single hotel by room count, at approximately 6,850 rooms. The connected Venetian and Palazzo complex is larger when counted together.

What is the oldest resort on the Las Vegas Strip?

The Flamingo, opened in 1946, is the oldest surviving Strip resort, although almost nothing of the original structure remains.

Which Las Vegas casino paid the biggest jackpot?

The Excalibur, where a Megabucks slot paid $39.7 million in 2003. It remains the largest slot jackpot on record.

Is Las Vegas still mainly about gambling?

No. Non-gaming revenue from rooms, dining, entertainment, conferences and retail now exceeds gaming revenue on the Strip.

Which is bigger, Las Vegas or Macau?

Macau generates substantially more gaming revenue and has done since 2006, driven largely by high-stakes baccarat. Las Vegas remains larger as a broader entertainment and conference destination.

Why do Las Vegas hotels have so many rooms?

Rooms were historically priced to fill the building, with revenue coming from gaming and other spending once guests arrived. That model supported room counts far beyond anything commercially viable elsewhere.

Responsible gambling

Gambling should be treated as paid entertainment and never as a way to make or recover money. Set deposit and loss limits before you play. Free, confidential support is available at BeGambleAware.org and on the National Gambling Helpline, 0808 8020 133. GAMSTOP lets you self-exclude from every UK licensed online operator at once.

Sources

• Operator published room counts and property information
• Nevada Gaming Control Board: Strip revenue reporting
• Las Vegas Convention and Visitors Authority: visitor statistics