Wyoming King vs. Alaskan King vs Texas King: What’s the Difference?

Wyoming King vs Alaskan King vs Texas King

You’ve likely heard of a king size mattress (Eastern King) and a California king (Western king), but what about a Wyoming king, Alaskan king, or Texas king? Although these three oversized mattresses are not very common, they each offer a different sleep experience you may find useful. Couples looking for more space and families who prefer co-sleeping will enjoy the luxury of an oversized bed.

It’s no coincidence that these beds are named after three of the biggest states in the country. These mattresses provide an additional 8 to 32 inches in width when compared to a standard king size mattress. Plus, an Alaskan king is 24 inches longer than a California king.

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Oversized Mattress Dimensions

The following chart outlines the dimensions and recommended room size for these three oversized mattresses.

SpecificationsWyoming KingTexas KingAlaskan King
Width (Inches)84 Inches80 Inches108 Inches
Width (CM)213.36 CM203.2 CM274.32 CM
Length (Inches)84 Inches98 Inches108 Inches
Length (CM)213.36 CM248.92 CM274.32 CM
Recommended Room Size (Feet)12 feet by 12 feet12 feet by 14 feet16 feet by 16 feet
Recommended Room Size (CM)365.76 CM by 365.76 CM365.76 CM by 426.72 CM487.68 CM by 487.68 CM
Mattress ShapeSquareRectangleSquare

Oversized Mattress Sizes

If you are looking for a bigger mattress, a Wyoming king, Alaskan king, or a Texas king may be just what you need. However, it is helpful to remember that these mattresses can only fit comfortably in a large master bedroom. Also, bigger beds are not available in most mattress stores and may be difficult to find online.

Below, we highlight the pros and cons of these three oversized mattresses so you can determine which is right for you.

Wyoming King

84 inches by 84 inches

A Wyoming king bed measures 84 inches by 84 inches. This square shape mattress offers each sleeper 42 inches of personal sleep space—that’s 4 inches more per side than a standard king size bed.

A Wyoming king has the same length (84 inches) as a California king mattress, which is the longest standard mattress available. However, some couples find a Cal king bed too narrow, especially if their children frequently climb into bed with them. A Wyoming king is 12 inches wider than a Cal king, so each sleeper has plenty of room to spread out without being pushed to the edge of the mattress.

In terms of room size, a Wyoming king fits comfortably in a standard 14 foot by 16-foot master bedroom. If your bedroom is on the narrow side, it may not accommodate the extra width of a Wyoming king.


  • Extra length and width is ideal for taller couples
  • Perfect for families who prefer co-sleeping


  • More expensive than a standard size mattress
  • Will not fit comfortably in a smaller size bedroom

Average Price: $1500 to $3000

Texas King

80 inches by 98 inches

A Texas king measures 80 inches by 98 inches and is the second-largest oversized mattress. Although a Texas king is narrower than a Wyoming king (by 4 inches), it is still 4 inches wider than a standard king mattress and 8 inches wider than a California king. So, in most cases, it can accommodate two adults and one to two children.

The most impressive feature of a Texas king is the length—this mattress is 18 inches longer than a standard king and 14 inches longer than a Cal king. The extra length of a Texas king is perfect for taller individuals. For example, a person who is 6.5 feet tall (78 inches) would still have 18 to 20 inches of extra space at the foot of the bed.

The rectangular shape of a Texas king is more suited to a narrow bedroom. But, this mattress should fit comfortably in most 14 by 16-foot master bedrooms.


  • Perfect for tall individuals with a narrow bedroom
  • Enough space for two adults and one to two children


  • Narrower than the Wyoming king
  • Co-sleeping with more than one to two children may be cramped

Average Price: $2000 to $3500

Alaskan King

108 inches by 108 inches

An Alaskan king is the largest of the oversized mattresses and measures 108 inches by 108 inches. If you co-sleep with more than two children, this mattress is ideal. An Alaskan king is so spacious that you and your whole family can spread out and sleep soundly without ever feeling cramped.

Like the Wyoming king, the Alaskan king is an equal square shape. But, the Alaskan king is 24 inches wider than a Wyoming king and 10 inches longer than a Texas king. These beds offer significantly more space when compared to a standard king size mattress, which measures 76 inches by 80 inches.

Those over 6.5 feet tall will enjoy the extra legroom that comes with an Alaskan king. Even a person who is 7 feet tall (84 inches) will have 20 to 24 inches of additional space at the foot of this bed. This feature allows very tall sleepers to rest comfortably without worrying about hanging off the end of the bed.

Since Alaskan kings are so big, they need a slightly larger bedroom to accommodate their size. Most master bedrooms measure 14 by 16 feet. But, we recommend opting for an Alaskan king only if your bedroom measures at least 16 by 16 feet. The additional width will provide plenty of room to move around the perimeter of the bed.


  • Suitable for very tall individuals
  • Spacious enough for you and your whole family to spread out


  • Most expensive oversized mattress
  • Must be used in a larger master bedroom

Average Price: $2500 to $5000

Purchasing an Oversized Mattress

If your family prefers co-sleeping, an oversized mattress will offer you a comfortable sleep experience. The best mattress for you will depend on the number of people who plan to share the bed and the body type of each sleeper. Tall individuals should opt for mattresses with more length, such as the Texas king or the Alaskan king. Heavy sleepers should opt for a wider bed, such as the Wyoming king or the Alaskan king.

As you shop, be sure to keep your bedroom size in mind. It is a good rule of thumb to leave at least 2 feet of space on all three sides so you can move around the bed easily. If you are considering an oversized bed, measure your space first and account for other furniture such as nightstands and bedside lamps.

Where to Buy an Oversized Mattress

An oversized bed is a great addition to your home; however, they are not widely available. These sizes do not come standard at most brick and mortar retailers or with many online mattress brands.

A company that offers custom-made beds may be able to create one of these sizes for you. This option will also allow you to select the mattress type that’s right for you, such as a hybrid or a memory foam mattress.

Bedding and Accessories for an Oversized Mattress

Bedding, such as sheets, comforters, and duvets, are not readily available for oversized beds. In most cases, oversized sheets need to be custom made. When purchasing a comforter or duvet, you can add 16 inches to the width of the mattress, and 12 inches to the length to determine the size you’ll need.

Since oversized mattresses are not very common, companies that make them typically offer foundations and frames to accommodate these bigger beds. If they do, it is a good idea to purchase one with the mattress since larger frames are not available at many retailers. If they do not offer a bed frame, you can also have one built.

Frequently Asked Questions

What are the standard mattress sizes?

In the U.S., there are six standard mattress sizes—twin, twin XL, full, queen, king, and California king. Queen size mattresses tend to be the most popular because they are large enough for couples but also provide solo sleepers more room to spread out. In some cases, queen size mattresses can be found in a slightly larger option, called an Olympic queen, which measures 66 inches by 80 inches—making it 6 inches wider than a standard queen.

What is bigger than an Alaskan king?

An Alaskan king bed measures 108 inches by 108 inches (9 feet by 9 feet) and is the largest mattress available. These beds offer multiple sleepers plenty of room to spread out and sleep comfortably. Plus, taller individuals (those over 6.5 feet) will enjoy the extra legroom that comes with an Alaskan king.

Did We Help?

An oversized mattress may not be right for everyone. But, a larger bed can provide a unique sleeping experience—allowing you, your spouse, and your children to spread out and sleep soundly without crowning each other. These beds are more expensive and require more customization than a standard mattress, but co-sleeping families, taller individuals, and larger couples will find them well worth the extra cost.

This article is for informational purposes and should not replace advice from your doctor or other medical professional.

Sarah Anderson, Certified Sleep Science Coach Sarah Anderson

Sarah Anderson is a sleep, health, and wellness writer and product reviewer. She has written articles on changing and improving your sleep schedule, choosing the right mattress for chronic pain conditions, and finding the best pillow for you. Sarah Anderson has her Bachelor of Arts degree from Arizona State University in Journalism and Mass Communications. Prior to working for Zoma, she wrote for a variety of news publications. Sarah's work has been featured on Bustle, PureWow, and other publications.

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Comments ( 8 )

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  1. Wow! Hubs and I were thinking about a California king, thinking it was the largest mattress! This article/site has given us SO MUCH to think about!

    Thank you so much for supplying such exceptional information with no extra (frills and fluff!)


  2. Why do you say a Texas king may be to narrow? Most mattresses are 80″ long, if you turn the Texas king so it’s 80″ long, it is then 98″ wide and a standard length. That’s the same length as a queen and more than 3 feet wider.

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