There are 16 zip codes in Lawrence County, Pennsylvania. The most populated is 16101, located in New Castle. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
16101New Castle30,954
16117Ellwood City15,805
16105New Castle15,565
16102New Castle5,166
16156Volant3,366
16157Wampum2,955
16116Edinburg2,857
16120Enon Valley2,315
16143Pulaski1,979
16141New Galilee1,741
16112Bessemer1,466
16160West Pittsburg956
16172New Wilmington845
16140New Bedford391
16132Hillsville350
16155Villa Maria98

Lawrence County, Pennsylvania Zip Codes by Population (2024)