Interlochen, MI

ZIP code 49643 covers Irons, an unincorporated community in Lake County in Michigan’s northwestern Lower Peninsula. Its most notable landmarks are the Little Manistee River, surrounding Manistee National Forest lands, and the Little Manistee River State Forest Campground, a recreation site along the river. The area is largely rural, with forest, waterways, and dispersed properties surrounding the small Irons community.