What is a standard queen-size mattress?

In the United States, the dimensions of a standard queen-size mattress are 60 inches wide and 80 inches long, according to the Better Sleep Council. The queen-size mattress is popular because it fits into smaller spaces while providing plenty of room for single sleepers.

A queen mattress is larger than a full mattress, but two adults sleeping on a queen mattress each have a smaller sleeping space than if each person slept on a twin mattress, adds the Better Sleep Council. Although a queen mattress is smaller than a king, offering 16 inches fewer in width, it is the most popular size of mattress sold, claims Bedding Experts.