Sunbury Flag

Sunbury

County Seat:
Yes
Area (mi²):
2.007
State:
Pennsylvania

Sunbury is a city located in Northumberland County, Pennsylvania. Sunbury has a 2026 population of 9,549. It is also the county seat of Northumberland County. Sunbury is currently growing at a rate of 0.15% annually but its population has decreased by -1.57% since the most recent census, which recorded a population of 9,701 in 2020.

9.5K
Total Population
4,759
Density (mi²)
14 0.15%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)