Middletown, IA is a city located in Des Moines County, Iowa and has a land area of 33.81 square miles (87.57 km2). The water area for the city is 0.18 square miles or 0.47 km2. There is one unique zip code in Middletown, Iowa and it is 52638. The area code(s) for Middletown is 319.
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