The county seat shifted to Cheboygan in about 1870. Duncan was made the county seat in 1853 and the location of the federal land office in 1855.
It was made the county seat in 1853.ĭuncan or Duncan City was given a post office in 1850 as a result of the building of sawmills in this area.
He recruited other settlers, and a post office named 'Duncan' was established in 1846. In 1844, Jacob Sammons, a cooper from Fort Mackinac, chose the old native camping ground, known as Shabwegan, as the site for his cabin. Cheboygan was originally an Ojibwe settlement.