Neffs, PA is a city located in Lehigh County, Pennsylvania and has a land area of 0.17 square miles (0.44 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Neffs, Pennsylvania and it is 18065. The area code(s) for Neffs is 484/610.
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