The county has an area of 2,144 square miles, of which 2,003 square miles is land and 141 square miles is water.
Utah Valley lies at the center of the county, lined by the mountains of the Wasatch Range on the east. Utah Lake occupies a large part of the valley. The elevation ranges from 4,487 feet above sea level at the lake to 11,928 feet at the peak of Mount Nebo.
