There are 112 Landscape Architects & Designers in Contra Costa County, California, serving a population of 1,123,678 people in an area of 723 square miles. There is 1 Landscape Architects & Designer per 10,032 people, and 1 Landscape Architects & Designer per 6 square miles.
In California, Contra Costa County is ranked 14th of 58 counties in Landscape Architects & Designers per capita, and 6th of 58 counties in Landscape Architects & Designers per square mile.