Colfax, IA is a city located in Jasper County, Iowa and has a land area of 61.01 square miles (158.02 km2). The water area for the city is 0.74 square miles or 1.92 km2. There is one unique zip code in Colfax, Iowa and it is 50054. The area code(s) for Colfax is 515.
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