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:  The county was founded in 1822 and organized as a county in 1826. Ann Arbor, Michigan:  The 2010 census recorded its population to be 113,934, making it the sixth largest city in Michigan.
i don't know