Colfax, IL is a city located in Mclean County, Illinois and has a land area of 69.43 square miles (179.82 km2). The water area for the city is 0.02 square miles or 0.05 km2. There is one unique zip code in Colfax, Illinois and it is 61728. The area code(s) for Colfax is 309.
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