In what year was the county in which Ann Arbor, recorded to have a population of 113,934 in the 2010 census, and belonging to the US state of Michigan, founded?
Washtenaw County, Michigan Washtenaw County ( ) is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 344,791. The county seat is Ann Arbor. The county was founded in 1822 and organized as a county in 1826.
Springfield Township, Oakland County, Michigan Springfield Charter Township is a charter township of Oakland County in the U.S. state of Michigan. As of the 2010 census, the township population was 13,940. The township was named for the numerous springs in the area.