Mackinaw, IL is a city located in Tazewell County, Illinois and has a land area of 46.67 square miles (120.87 km2). The water area for the city is 0.19 square miles or 0.49 km2. There is one unique zip code in Mackinaw, Illinois and it is 61755. The area code(s) for Mackinaw is 309.
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