There are 28 Alteration Services in Iowa, serving a population of 3,118,102 people in an area of 55,842 square miles. There is 1 Alteration Service per 111,360 people, and 1 Alteration Service per 1,994 square miles.
The state of Iowa is ranked 36th in Alteration Services per capita, and 37th in Alteration Services per square mile.