There are 30 Monuments & Memorials in Washington, serving a population of 7,169,967 people in an area of 66,439 square miles. There is 1 Monument & Memorial per 238,998 people, and 1 Monument & Memorial per 2,214 square miles.
The state of Washington is ranked 49th in Monuments & Memorials per capita, and 41st in Monuments & Memorials per square mile.