Welcome to St. Clair County, Michigan Website. Here you will find information about St. Clair County, Michigan including coupons, restaurants, shopping, hotels, local businesses, transportation, real estate, public services, dining, salons, schools, sports, automotive, banking, shops, business, healthcare, relocation, travel, tourism, and vacations in St. Clair County, Algonac, Allenton, Anchorville, Avoca, Berlin, Brockway, Burtchville, Capac, Casco, China, Clay, Clyde, Columbus, Cottrellville, East China, Emmett, Fort Gratiot, Grant, Greenwood, Ira, Kenockee, Kimball, Lynn, Marine, Marysville, Memphis, Mussey, North Street, Fargo, Pearl Beach, Port Huron, Richmond, Riley, St. Clair City, Wales and Yale. Places of interest in St. Clair County, Michigan include Lake Port State Park, Port Huron Museum, Blue Water Bridge, Lake Saint Clair, Algonac State Park and St. Clair Community College.