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.
Troy was recently ranked the 5th safest city in the nation, as well as the safest in Michigan. In 2008, Troy was ranked 22nd on a list of "Best Places to Live" in the United States by CNN Money, using criteria including housing, quality of education, economic strength, and recreational opportunities. In 2008, Troy ranked as the fourth most affordable U.S. city with a median household income of $200,000.
The first land purchases in what became Troy Township were recorded in 1819 in section 19. The first settlement, known as Troy Corners, originated two years later when Johnson Niles purchased 160 acres (65 ha) in what is now the north-central portion of the city. Four years later, Ira Smith built the first house at Big Beaver Corners, and the first public school opened at Troy Corners. Troy Township was organized on May 28, 1827. The City of Troy was incorporated in 1955, mainly as a way to prevent neighboring cities (Clawson, Royal Oak, and Birmingham) from incorporating any more of its land into their cities.