Marengo, IL is a city located in Mchenry County, Illinois and has a land area of 95.35 square miles (246.96 km2). The water area for the city is 0.12 square miles or 0.31 km2. There is one unique zip code in Marengo, Illinois and it is 60152. The area code(s) for Marengo is 815/779.
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