Stewartsville, MO is a city located in Dekalb County, Missouri and has a land area of 87.10 square miles (225.59 km2). The water area for the city is 0.36 square miles or 0.93 km2. There is one unique zip code in Stewartsville, Missouri and it is 64490. The area code(s) for Stewartsville is 816.
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