Washington is a city on the Missouri River in Franklin County, Missouri, United States. The population was 13,892 from the 2010 census. It is the corncob pipe capital of the world, with Missouri Meerschaum located on the riverfront.
Washington is located at 38°33′7″N 91°0′48″W (38.551879, -91.013313). According to the United States Census Bureau, the city has a total area of 9.87 square miles (25.56 km2), of which 9.34 square miles (24.19 km2) is land and 0.53 square miles (1.37 km2) is water. The city has a borderline humid subtropical climate. The majority of annual precipitation falls during the humid springs and summers. Typically, fall and winter are relatively dry. While snow is not rare, it is not as frequent as in the upper Midwest. An average of 19 inches falls annually.