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As most people know, beds come in a variety of different sizes, with the most common mattress sizes being King, Queen, Full (Double), and Twin (Single). However, if you are willing to look hard enough, it is also possible to get beds in a number of other sizes. Below is the complete list of standard mattress sizes in the United States and Canada:

Mattress Size Information

Not surprisingly, bed size preferences appear to be getting larger over time. Until as recently as the 1970's, the most popular bed size was Full (which is why Full-size mattresses are sometimes referred to as "Standard" size). However, the Queen bed is now the most widely purchased mattress size in the US, followed by the King-size mattress. The California King (also known as "Western King"), a relative newcomer that is slightly longer and narrower than a standard King (sometimes referred to as an "Eastern King"), is also growing rapidly in both popularity and availability.

Though most mattress models are available across a wide variety of sizes, certain bed types are known for being more limited in their size selection. For instance, hard-sided waterbeds are generally not available in traditional bed sizes, but rather are found in the longer California King, California Queen and Super Single sizes. Similarly, some bed sizes are most frequently associated with specific types of beds. As an example, "King Split" and "Queen Split" mattresses tend to be common among adjustable beds. Likewise, "Extra Long" bed sizes tend to be most commonly found in dormitories, 3/4 mattresses are used primarily with antique bed frames, and crib mattresses are naturally used only in baby beds and toddler beds.