There are 265 Interior Designers in Philadelphia County, Pennsylvania, serving a population of 1,569,657 people in an area of 135 square miles. There is 1 Interior Designer per 5,923 people, and 1 Interior Designer per square mile.
In Pennsylvania, Philadelphia County is ranked 16th of 67 counties in Interior Designers per capita, and 1st of 67 counties in Interior Designers per square mile.