Please add profiles of those who were born, lived or died in Sanilac County, Michigan. Official Website The county was created on September 10, 1822 and was fully organized on December 31, 1849. It was probably named for a Wyandot (Huron) chief named Sanilac. Adjacent Provinces & Counties Huron County Tuscola County Lapeer County St. Clair County Province of Ontario For a...