Washington County is located in the southwestern corner of Utah, United States. Its southern border touches the northern border of Arizona, and its western border touches the eastern border of Nevada. The county seat and largest city is St. George. Washington County is known for having diverse terrain, including mountains and flat areas, and it encompasses notable areas such as Zion National Park. It is one of the fastest-growing counties in Utah and is also known as Utah's Dixie due to its history of cotton farming. The county was named after George Washington, the first President of the United States.