There are 545 Addiction Treatment Centers in Washington, serving a population of 7,169,967 people in an area of 66,439 square miles. There is 1 Addiction Treatment Center per 13,155 people, and 1 Addiction Treatment Center per 121 square miles.
The state of Washington is ranked 23rd in Addiction Treatment Centers per capita, and 26th in Addiction Treatment Centers per square mile.