There are 340 Interior Designers in Allegheny County, Pennsylvania, serving a population of 1,229,605 people in an area of 730 square miles. There is 1 Interior Designer per 3,616 people, and 1 Interior Designer per 2 square miles.
In Pennsylvania, Allegheny County is ranked 3rd of 67 counties in Interior Designers per capita, and 3rd of 67 counties in Interior Designers per square mile.