Mc Lean, IL is a city located in Mclean County, Illinois and has a land area of 78.20 square miles (202.54 km2). The water area for the city is 0.02 square miles or 0.05 km2. There is one unique zip code in Mc Lean, Illinois and it is 61754. The area code(s) for Mc Lean is 309.
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