Wyoming King VS. Alaskan King – What’s the Difference?

If you’re looking for a king size mattress, you will notice that there are a lot of state-named king beds available. Alaska, Texas, California, and Wyoming are only a few states that have mattresses named after them. For several years now these custom size king mattresses have been gaining popularity. But what makes them different from beds of standard sizes? And more importantly, how do they differ from each other?

All state-named mattresses are essentially oversized traditional king size beds. Generally speaking, they are wider and longer than the regular eastern king size mattress. If you never came across a state-named larger mattress it might be because they are usually custom made and not displayed in mattress stores. But now that you’re here, let’s break down the differences between the two most popular ones – Wyoming king and Alaskan king size beds. 

Wyoming King Size Mattress

A Wyoming king mattress is the smallest of the oversized state-named king mattresses. But don’t be fooled, it’s still pretty big. Named after the state of Wyoming, it’s one of the more popular options for custom-sized beds.


A Wyoming king mattress dimensions are 84” in width and 84” in length. It’s a square-shaped oversized mattress, 8 inches wider and 4 inches longer than the standard king size bed. 

Because it’s longer, it might be more comfortable for taller people. The Wyoming king is the same length as the California king, but wider by 8 inches. Because of the width of the Wyoming king mattress, it’s suitable for several sleepers who need more space. If you are a restless sleeper and tend to interrupt your partner’s sleep, a Wyoming king bed might be a solution to this problem.

Usually, mattresses of this size can be very useful and comfortable for families who want to share their beds with kids. The width of the Wyoming mattress is perfect for accomodating a small family adequately. Although, if you are sharing the bed with more than one kid, it might feel quite crowded. 

Room Recommendation 

A room for any kind of king mattress has to be quite big. The fact that the Wyoming king size is even bigger in length and width, a room to accommodate this kind of custom mattress should be respectively wider and longer. 

As a general practice, the room around the bed should be 2 feet on all sides. So for Wyoming king size bed, the room should be at least 12 feet by 12 feet. Because the Wyoming king is square-shaped the ideal room for such a bed would be square-shaped as well.


The Wyoming king mattress is a little bit pricier than the regular king. The average price of this bed is $1500 – $3000 or more. Aside from the size, Wyoming king beds also differ in price depending on other factors, such as firmness, materials it’s made of, the brand, and so on.

Also, not all manufacturers make Wyoming king mattresses, so it might be slightly more complicated to find one. And those who do make Wyoming size mattresses tend to upcharge because of their custom measurements.

Pros & Cons 

Let’s break down the pros and cons of the Wyoming king size mattress:


  • Perfect for spacious sleeping
  • Better for taller people
  • Perfect bed for a small family


  • Can be more expensive than other mattresses
  • Requires quite a big bedroom
  • If you are co-sleeping with kids, it can comfortably accommodate only one child

Alaskan King Size Mattress

Alaska is the largest state in the U.S. which is a perfect name for this mattress. It’s the biggest custom king mattress on the market. It may not be as popular as Wyoming, but it’s a great option for those who want an extra-large king bed.


The Alaskan king bed size 108” wide and 108” long, so it’s also a square-shaped mattress. Compared to a standard king size bed, it’s 28 inches longer and 32 inches wider. The Alaskan king size bed is very large and it provides a lot of extra sleeping space.

A mattress of this size could easily accommodate more than two people. It’s a very convenient choice for partners with very different sleeping schedules or very restless sleepers who need extra space. You could easily wake up, go to sleep or change positions through the night without disrupting the other person.

It’s also a perfect match if you are planning to share the bed with your children. The Alaska king bed can comfortably accommodate two sleepers and more than two kids, allowing comfortable sleep for the whole family.

Room Recommendation 

As you can imagine, the room should be ginormous. The bed itself is 9×9 feet in perimeter. Following the recommendations of 2 feet on each side, the room for an Alaskan king should be at least 13 feet by 13 feet or bigger.

Transportation and set up of this size mattress could also be a problem. That’s why when choosing the Alaskan king, we recommend that you make sure the company provides a White Glove delivery service too.


Because of the mattress size, the price is pretty sizeable as well. Mattresses of this size are usually custom made and bought online rather than in a store. Normally the average price for an Alaskan king mattress is $2500-$5000 or more. The price, of course, also gets affected by branding, type, and materials of the mattress.

Another thing to note about Alaskan king beds is that finding bedding, a bed frame, and other sleeping accessories can be much more complicated. This can bring the overall price even higher. 

Pros & Cons 

To summarize all this information, here are the pros and cons:


  • Extremely spacious for several sleepers
  • Perfect for a big family 
  • Ideal for very restless sleepers or partners with different sleeping schedules


  • Can be considerably more expensive than other mattresses
  • Requires a lot of room
  • Might be difficult to find bedsheets and other sleeping accessories for

Is a Wyoming king or Alaskan king size better?

You must take into account a lot of factors when you are choosing a custom king size mattress, such as your budget, size of your bedroom, transportation, etc. Logistics aside, all of the oversized state-named kings are extra spacious and provide a luxury sleeping experience.

Depending on your family size and sleeping preferences, either one of these family beds can be a perfect option for you. If you like a lot of space or plan to share your bed with one kid, go for the Wyoming king. On the other hand, if you like sharing your bed with a partner and more than one kid, Alaskan king might be the way for you.


If you and your family like sharing the sleeping space, but still want comfort and personal space, going for custom-sized king beds could be it. These bigger beds are luxurious and spacious and are designed to provide plenty of space. Both Wyoming and Alaskan king mattresses are a great choice, but it’s up to you to choose the one that will suit you best.

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

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