Millersburg is located in northwestern Dauphin County on the east bank of the Susquehanna River at 40°32′30″N 76°57′26″W (40.541676, -76.957283). Wiconisco Creek enters the Susquehanna at the southern edge of the borough. According to the United States Census Bureau, Millersburg has a total area of 0.76 square miles (1.97 km2), all land.
Zip Codes in Millersburg, PA that we also serve: 17061