Merrimac, WI

ZIP code 53561 serves Merrimac, a village on the eastern shore of Lake Wisconsin in Sauk County. Prominent landmarks include the Merrimac Ferry, a free vehicle ferry crossing the Wisconsin River between Merrimac and Lodi, and Gibraltar Rock State Natural Area, known for its wooded bluff and overlook. Lake Wisconsin also defines the area’s shoreline and provides opportunities for boating and other recreation.