Ann Arbor is a city in the U.S. state of Michigan and the county seat of Washtenaw County. The 2010 census recorded its population to be 113,934, making it the sixth largest city in Michigan. The Ann Arbor Metropolitan Statistical Area (MSA) includes all of Washtenaw County, which had a population of 344,791 as of 2010. The city is also part of the larger Detroit–Ann Arbor–Flint, MI Combined Statistical Area (CSA) with a population of 5,318,744.Ann Arbor was founded in 1824, named for wives of the village's founders 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. During the 1960s and 1970s, the city gained a reputation as a center for left-wing politics. Ann Arbor became a focal point for political activism and served as a hub for the civil-rights movement and anti-Vietnam War movement, as well as various student movements.Ann Arbor is home to the University of Michigan, one of the foremost research universities in the United States. The university shapes Ann Arbor's economy significantly as it employs about 30,000 workers, including about 12,000 in the medical center. The city's economy is also centered on high technology, with several companies drawn to the area by the university's research and development money, and by its graduates.