Wyoming vs Alaskan vs Texas King Mattresses: Ultimate Size Comparison (2026)

Quick answer: Wyoming King (84×84″) is the smallest oversized mattress, good for couples with one child. Texas King (80×98″) offers extra length for tall sleepers. Alaskan King (108×108″) is the largest, fitting whole families but requiring huge rooms (16×16 feet minimum). All cost $1,000-$5,000 and need custom bedding.

What do the three states of Wyoming, Alaska, and Texas have in common? They are all huge, ranking amongst the top 10 states of the United States in terms of area. Logically, the mattresses named after these states are large, as well. The Wyoming king, Alaskan king, and Texas king mattresses are bigger than all standard mattress sizes.

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These oversized mattresses are a perfect fit for anyone who enjoys more sleeping space.  They can be 8 to 32 inches wider than the King size (a.k.a. Eastern King), which is the widest amongst standard-sized mattresses.

How Big Are Wyoming, Texas, and Alaskan King Mattresses?

Size	Dimensions	Surface Area	Best For	Room Needed
Wyoming King	84 by 84 feet	49 square feet	Couple with a child	14 x 14 feet
Texas King	80 inches by 98 inches	54.4 square feet	Taller sleepers	12×14 feet
Alaskan King	108 inches by 108 inches	81 square feet	Large families	16×16 feet

Which Oversized King Mattress Is Right for Your Family?

Wyoming king, Alaskan king, and Texas king are the three standards in the oversized mattress segment. However, these larger mattresses aren’t easily available in brick and mortar stores or online, and you’ll need spacious master bedrooms to comfortably fit these bigger beds inside.

Wyoming King

Wyoming king is the smallest in size of the oversized mattresses. Measuring 84 inches by 84 inches, the Wyoming king is as long as the California king size mattress, but it’s 12 inches wider.

A California king bed measures 72 inches by 84 inches, maybe too narrow for large couples who want to share the bed with their children. The extra 12 inches on the Wyoming king comes in handy to accommodate an extra sleeper without making them feel cramped.

A Wyoming king bed is 8 inches wider and 4 inches longer than a standard king size bed, which measures 76 inches by 80 inches. It’s a good option for families who feel cramped in large standard sized beds.

Average Price: $1000-$4500

Pros 

• Most affordable oversized option
• Fits in smaller master bedrooms (as small as 12×12 feet)
• Perfect for couples with one small child

Cons

• Too small for families with multiple children
• Limited availability requires custom ordering

Alaskan King

Alaska is the largest state in the country, which explains why the largest oversized mattress is named after this state. Measuring 108 inches by 108 inches, this ginormous mattress gives you and your whole family the luxury of sprawling comfortably.

The square-shaped Alaskan king is 24 inches longer than the California king size mattress, which is the longest among the standard sizes. The extra length is perfect for accommodating very tall sleepers. They feel comfortable on this mattress because there’s no risk of dangling feet while changing sleeping positions.

If you are apart of a large family and co-sleeping with more than two children, the huge Alaskan king bed is an excellent choice for you.  You can accommodate the whole family in the extra space without causing any sleep disruptions.

The big Alaskan kings are a perfect option for couples with different sleep schedules, their expansive space establishing mattresses for motion isolation. The partners can get in and out of the bed without disrupting the other’s sleep due to motion transfer.

See also California King vs. Alaskan King.

Average Price: $2500-$5000

Pros

• Largest sleeping surface available (81 square feet total)
• Accommodates entire families comfortably (2 adults + 3-4 children)
• Square shape works well for couples with different sleep schedules
• Provides ultimate luxury and space for restless sleepers

Cons

• Most expensive option, plus custom bedding costs can exceed $1,000 for complete set
• Requires enormous bedroom (minimum 16×16 feet for proper clearance)
• Nearly impossible to move through standard doorways
• May overwhelm smaller homes and look disproportionate

Texas King

Texas is the second-largest state in the USA, so the Texas king is the second largest in terms of mattress size.  Measuring 80 inches by 98 inches, the Texas king bed is actually narrower than the Wyoming king, the smallest oversized mattress. However, it compensates for this loss by the extra length of 14 inches.

If you have to accommodate more sleepers, a Wyoming king may be better than a Texas king. However, a Texas king will be a better choice for taller sleepers. The typical 80 or 84-inch length of standard beds isn’t enough, for some. The Texas king is perfect for those really tall sleepers who crave extra legroom.

This rectangular-shaped oversized bed is 10 inches shorter and 28 inches narrower than an Alaskan king. It’s a good option for tall sleepers who don’t have huge rooms to accommodate an Alaskan king.

See also our Texas King vs California King guide.

Average Price: $2000 – $3500

Pros

• Best option for very tall sleepers (98″ length accommodates over eight feet)
• More affordable than Alaskan King
• Fits in narrower bedrooms
• Provides extra legroom without excessive width

Cons

• Narrowest of the oversized mattresses (80″ width same as Cal King)
• Poor choice for families wanting to co-sleep with multiple children
• Still requires custom bedding and foundations
• Takes up significant bedroom length, limiting furniture placement

What Are the Key Differences Between Oversized Mattresses?

Oversized mattresses are also known as family beds because they’re convenient for co-sleeping. The huge space in these beds also makes them perfect for couples with different sleep schedules, with space between partners lowering the chances of disrupting each other’s sleep.

The best mattress for you will depend on the number of members in your family, each person’s physical build, and the space available in your bedroom.

Ideally, you should leave at least 2 feet space on all three sides of the bed for perfect sleeping ambiance. An overcrowded room may cause sleep disruptions.

When deciding on the size of your mattress, take into account the area you’ll leave for some walking space and furniture such as side tables, floor lamps, or dressers.

Where Can You Buy Oversized King Mattresses?

Oversized beds aren’t easily available in all mattress stores. You’ll have to research online to find companies making these custom sizes.

Some boutique bedding brands are willing to work with you from scratch to custom-make you an oversized mattress. You can even customize the mattress type, such as latex, memory foam, innerspring, or hybrid.

How Do You Find Bedding for Oversized Mattresses?

One common disadvantage of all oversized mattresses is their incompatibility with most bedding accessories and foundations. Usually, the companies who make these mattresses may make compatible foundations, bed frames, and bedding accessories, but if they don’t, you can have them specially made. Another option could be to place your oversized mattress directly on the floor.

If you don’t find sheets easily, you can get your flat and fitted sheets tailor-made. While buying or ordering a comforter or duvet, remember the 12-16 rule, for covering all three sides of the mattress: when making the bed, your comforter or duvet should be 16 inches wider and 12 inches longer than your oversized mattress.

What Other King Size Options Are Available?

Standard King

The standard king mattress, sometimes called the Eastern king bed, is one of the most popular mattress sizes, measuring 76 inches in width and 80 inches in length. This size provides ample space for couples to sleep comfortably without feeling cramped. It is a versatile choice for most bedrooms, fitting well in larger spaces.

See also:

• King vs. Queen: What’s the Difference?
• King vs. California King: What’s the Difference?

California King

The California king mattress is slightly longer and narrower than the standard king, measuring 72 inches in width and 84 inches in length. This size is ideal for individuals or couples who prioritize extra legroom and have a longer bedroom space. The California king is a popular choice on the West Coast.

See also:

• California King vs Alaskan King: What’s the Difference?
• California King vs Texas King: What’s The Difference?

Super King

The super king mattress is a larger variant designed for those who desire even more sleeping space. While dimensions can vary, they generally exceed the measurements of a standard king or California king. This size is well-suited for spacious master bedrooms, providing a luxurious and expansive sleeping surface.

See also Super King Size Beds vs. King Size Beds: What’s The Difference?

Split King

The split king mattress consists of two separate mattresses, each measuring the same as a standard king or California king, allowing for individual customization on each side of the bed. This option is popular for couples with different firmness preferences or adjustable bed frames, providing personalized comfort for both sleepers.

See also:

• King vs. Split King: What’s the Difference?
• Twin XL vs. Split King: What’s the Difference?

Alberta/Vermont King

The Alberta king mattress is also called a Vermont king. It measures 96 inches by 96 inches. That means it is 8 feet wide and 8 feet long. his size bridges the gap between the Wyoming king and the massive Alaskan king. Like other oversized kings, it’s a great mattress size for couples with children or partners who simply want more sleep space.

You need a bedroom that is at least 15 feet by 15 feet. While smaller than what you need for an Alaskan king, it is still much bigger than a normal bedroom.

Family Size

While not technically kings, family size mattresses represent the ultimate in width, measuring 144 inches by 84 inches (12 feet by 7 feet). Despite being shorter in length than some oversized options, the extraordinary width makes this the largest mattress by total surface area after the Alaskan king.

This bed works well for big families who all sleep together. Many adults and kids can fit on it. It is also good for families who like to watch movies in bed together.

FAQs

What are the standard mattress sizes?

Most manufacturers offer twin, twin xl, full, queen, king, and California king sizes. Out of these, the queen size mattress is the most popular.

Can you buy oversized mattresses in stores?

No, oversized kings are custom-order only from specialty manufacturers, not available in regular mattress stores.

How much do oversized king mattresses cost?

Wyoming King: $1,000-$4,500, Texas King: $2,000-$3,500, Alaskan King: $2,500-$5,000, plus custom bedding costs.

What room size do you need for an Alaskan King?

Minimum 16×16 feet for proper clearance around the bed and furniture placement.

Do oversized mattresses need special foundations?

Yes, you need custom bed frames and foundations, or you can place directly on the floor.

Can regular sheets fit oversized mattresses?

No, all bedding must be custom-made to fit these non-standard dimensions.

What’s bigger than an Alaskan king bed?

Alaskan king mattresses are the largest mattresses available. Some specialty retailers can and will make custom beds larger.

Conclusion

These oversized mattresses are perfect for large families who like to co-sleep. You can conveniently change sleeping positions without infringing on others’ personal space.

Choosing an oversized king mattress depends on your family size, room dimensions, and budget. Wyoming Kings work for couples with one child, Texas Kings suit tall sleepers, and Alaskan Kings accommodate large families. Remember to factor in custom bedding costs and room requirements when deciding.

Found this comparison helpful? Share your experience with oversized mattresses in the comments below, or share this guide to help others choose the right giant mattress size!