Middletown, PA is a city located in Dauphin County, Pennsylvania and has a land area of 31.12 square miles (80.60 km2). The water area for the city is 6.74 square miles or 17.46 km2. There is one unique zip code in Middletown, Pennsylvania and it is 17057. The area code(s) for Middletown is 717.
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