Friesland, WI

ZIP code 53935 serves Portage, Wisconsin, the county seat of Columbia County, along the Wisconsin River near the historic Fox–Wisconsin waterway portage. Notable landmarks include the Indian Agency House, the Fort Winnebago Surgeons Quarters, and the Columbia County Courthouse. The area also includes the Portage Canal and nearby remnants of Fort Winnebago, reflecting the region’s role in nineteenth-century travel and settlement.