Winnebago, WI is a city located in Winnebago County, Wisconsin and has a land area of 0.09 square miles (0.23 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Winnebago, Wisconsin and it is 54985. The area code(s) for Winnebago is 920.
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