(area code 810 is a telephone area code serving East Central michigan)
It includes the main cities of Flint, Lapeer, Port Huron, and all surrounding areas within the “Thumb” region of Michigan.
(Specifically, it includes all of Genesee County and Lapeer County, and parts of Oakland County, Macomb County, St. Clair County, Sanilac County and Livingston county)