Washington is a city on the south banks of the Missouri River, 50 miles west of St. Louis, Missouri, and the largest in Franklin County, Missouri, United States. The estimated population in July 2022 was 15,075, which is an increase of 3.97% since the 2020 U.S. census. It is notable for being the "corncob pipe capital of the world," with Missouri Meerschaum located on the riverfront.

Franklin County is located in the U.S. state of Missouri. At the 2020 census, the population was 104,682. Its county seat is Union. The county was organized in 1818 and is named after Founding Father Benjamin Franklin.