There are 42 Landscape Architects & Designers in District of Columbia, serving a population of 672,391 people in an area of 62 square miles. There is 1 Landscape Architects & Designer per 16,009 people, and 1 Landscape Architects & Designer per 1 square miles.
The state of District of Columbia is ranked 45th in Landscape Architects & Designers per capita, and 1st in Landscape Architects & Designers per square mile.