Kewanee, MO is a city located in New Madrid County, Missouri and has a land area of 4.20 square miles (10.88 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Kewanee, Missouri and it is 63860. The area code(s) for Kewanee is 573.
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