Ann Arbor is a city in the U.S. state of Michigan and the county seat of Washtenaw County. Ann Arbor is home to the University of Michigan. The city's economy is also centered on high technology, with several companies drawn to the area by the university's research and development infrastructure. Ann Arbor was founded in 1824, named for wives of the village's founders, both named Ann, and the stands of bur oak trees. The University of Michigan moved from Detroit to Ann Arbor in 1837, and the city grew at a rapid rate in the early to mid-20th century.