what is the county is in troy michigan?
Troy is a city in Oakland County in the U.S. state of Michigan. It is a suburb of Detroit. The population was 80,980 at the 2010 census, making it the 11th-largest city in Michigan by population, and the largest city in Oakland County. Troy has become a business and shopping destination in the Metro Detroit area, with numerous office centers and the upscale Somerset Collection mall.