All Pennsylvania Counties

Central Pennsylvania

Northumberland County, Pennsylvania

County seat: Sunbury

Northumberland County sits where the Susquehanna's north and west branches meet, with Sunbury as its county seat. Anthracite towns, Knoebels amusement park and river recreation define the county.

Cities, Towns & Communities

  • Sunbury
  • Shamokin
  • Milton
  • Mount Carmel
  • Kulpmont
  • Elysburg

Attractions

  • Knoebels Amusement Resort
  • Shikellamy State Park
  • Northumberland County historical sites

Parks & Recreation

  • Shikellamy State Park
  • Weiser State Forest
  • Montour Ridge

Transportation

Route 61, Route 147 and I-80/81 serve the county.

Frequently Asked Questions

What is the county seat of Northumberland County?

Sunbury is the seat of Northumberland County.

Is Knoebels in Northumberland County?

Yes. Knoebels Amusement Resort, a long-running free-admission park, is in Elysburg, Northumberland County.

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