Kewanee, IL is a city located in Henry County, Illinois and has a land area of 100.54 square miles (260.40 km2). The water area for the city is 0.02 square miles or 0.05 km2. There is one unique zip code in Kewanee, Illinois and it is 61443. The area code(s) for Kewanee is 309.
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