Swimming pools can come in all shapes and sizes. Deep Blue Pools and Spas can install rectangular swimming pools, oval pools, and even pools with fancy designs and curves. As a result, there is no standard size. However, most rectangular swimming pools are roughly twice as long as they are wide. Dimensions may be 10’x20’, 15’x30’, 20’x40’, and so on. The depth of swimming pools will also vary, typically starting at 3’ and increasing to up to 10’ or more. Space and intended usage will inform your decision on swimming pool size.