Why purchase an above-ground pool? Approximately 50% of the pools owned in the United States are above-ground. Many are turning to above-ground pools because they are built to last and offer a wide variety of wall and liner options. Others turn to aboveground pools because of the relatively low cost versus that of in-ground pools. Your lifestyle and entertainment plans are important to consider when thinking of the size and depth of the pool you'll require. Yard space is another obvious consideration - how much do you have right now and how much would you like to have left over when the pool is installed?