There are 313 Interior Designers in Contra Costa County, California, serving a population of 1,123,678 people in an area of 723 square miles. There is 1 Interior Designer per 3,590 people, and 1 Interior Designer per 2 square miles.
In California, Contra Costa County is ranked 15th of 58 counties in Interior Designers per capita, and 6th of 58 counties in Interior Designers per square mile.