Mifflinburg, PA is a city located in Union County, Pennsylvania and has a land area of 106.61 square miles (276.12 km2). The water area for the city is 0.33 square miles or 0.85 km2. There is one unique zip code in Mifflinburg, Pennsylvania and it is 17844. The area code(s) for Mifflinburg is 570/272.
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