Harsens Island is a small island located in the St. Clair River in Michigan, USA. It is part of St. Clair County and is known for its natural beauty and recreational opportunities. The island is primarily residential, with a mix of seasonal and year-round homes, and is accessible by ferry or private boat. The island features various outdoor activities, including fishing, boating, and birdwatching. Harsens Island is also home to the Harsens Island Wildlife Area, which provides habitats for diverse wildlife. The island's community is tight-knit, with local events and gatherings that foster a sense of belonging among residents.