About This Place
Washington is a town in McClain County, Oklahoma, United States. The population was 520 at the 2000 census.
Washington is located at 35°3′30″N 97°29′6″W / 35.05833°N 97.485°W / 35.05833; -97.485 (35.058364, -97.485010).
According to the United States Census Bureau, the town has a total area of 1.0 square miles (2.7 km²), all of it land.