<Tr> <Th> Summer (DST) </Th> <Td> EDT (UTC - 4) </Td> </Tr> <Tr> <Th> ZIP codes </Th> <Td> 17578 </Td> </Tr> <Tr> <Th> Area code (s) </Th> <Td> 717 </Td> </Tr> <P> Stevens, Pennsylvania, is an unincorporated community and census - designated place in Lancaster County, Pennsylvania, United States . The Stevens post office has ZIP code 17578 . Stevens was named in honor of Thaddeus Stevens . It was originally also called Reamstown Station, due to its being the closest railroad station to the much larger community of Reamstown . By 1899, the community was just referred to as Stevens P.O. </P>

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