Sandusky County Government Finance and Taxation 60 W Sanilac Rd Sanilac County is a county in the U.S. state of Michigan. As of the 2000 census, the population was 44,547 with a projection of 44,448 in 2006. The county seat is Sandusky. The county, which is part of the Thumb region, was created on September 10, 1822 and was fully organized on December 31, 1849. Sandusky MI County Government Finance and Taxation Sanilac County Treasurer www.sanilaccounty.net sanilac county michigan sanilac county government government sanilac county sanilac county townships sanilac county departments sanilac county board of commissioners sanilac county cities sanilac county villages sanilac county courts sanilac county michigan sanilac county government government sanilac county sanilac county townships sanilac county departments sanilac county board of commissioners sanilac county cities sanilac county villages sanilac county courts Business Reviews Sanilac County Treasurer Testimonials