There are 20 zip codes in Lycoming County, Pennsylvania. The most populated is 17701, located in Williamsport. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1770143,309Williamsport
1775612,415Muncy
1775412,236Montoursville
1774011,925Jersey Shore
1770210,653Williamsport
177376,566Hughesville
177524,929Montgomery
177284,618Cogan Station
177712,978Trout Run
177442,860Linden
177741,051Unityville
17762455Picture Rocks
17763260Ralston
17720245Antes Fort
17776185Waterville
1772365Jersey Shore
1774256Lairdsville
1776942Slate Run
1772728Cedar Run
1773925Jersey Mills
showing: 20 rows

Zip Codes in Lycoming County, Pennsylvania by Population (2024)