Shamokin is a city in Northumberland County, Pennsylvania, United States. Surrounded by Coal Township at the western edge of the Anthracite Coal Region in central Pennsylvania's Susquehanna River Valley, the city was named after a Saponi Indian village, Schahamokink. At the 2020 United States census, the population was 6,942.

Northumberland County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 91,647. Its county seat is Sunbury. The county is part of the Central Pennsylvania region of the state.