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is a borough in Lycoming County, Pennsylvania, United States. It is on the West Branch Susquehanna River, 15 miles (24 km) west by south of Williamsport. It is part of the Williamsport, Pennsylvania Metropolitan Statistical Area. In the past, Jersey Shore held farms, railroad shops, cigar factories, a foundry, and a large silk mill. In 1900, 3,070 people lived here; in 1910, 5,381; and in 1940, 5,432. The population was 4,482 at the 2000 census.
Jersey Shore is located at (41.202587, -77.266715). It is just east of the confluence of Pine Creek with the Susquehanna, surrounded to the north, west, and south by Porter Township and to the east (across the Susquehanna) by Nippenose Township. As the crow flies, Lycoming County is about northwest of Philadelphia and east-northeast of Pittsburgh.
According to the United States Census Bureau, the borough has a total area of 1.2 square miles (3.2 km²), all of it land.