Mertztown, PA is a city located in Berks County, Pennsylvania and has a land area of 21.63 square miles (56.02 km2). The water area for the city is 0.06 square miles or 0.16 km2. There is one unique zip code in Mertztown, Pennsylvania and it is 19539. The area code(s) for Mertztown is 610/484.
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