ANN ARBOR, city and county-seat of Washtenaw co., Mich.; on the Huron river and the Michigan Central railroad; 38 miles W. of Detroit. It is in an agricultural region; has National banks, high school, manufactories of farming implements, woolen goods, furniture, carriages, and organs, daily, weekly, and monthly periodicals, and is the seat of the University of Michigan. Pop. (1910) 14,817; (1920) 19,516.