Washington is a city in south central Washington County, Utah, United States and is a part of the St. George Metropolitan Area. The area is also known as Utah's Dixie because the Mormon pioneers who settled the St. George area came to the area to raise cotton, which was milled at the cotton mill in Washington. The population was 8,186 at the 2000 census, and 18,761 as of 2010. Washington is a fast-growing suburb of St. George, and is the second largest city in Washington County.
Source: Wikipedia