Columbia County, Pennsylvania

Columbia County
County
The Columbia County courthouse in Bloomsburg
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 41°03′N 76°24′W / 41.05°N 76.4°W / 41.05; -76.4
Country United States
State Pennsylvania
FoundedMarch 22, 1813
Named afterChristopher Columbus
SeatBloomsburg
Largest townBloomsburg
Area
  Total
490 sq mi (1,300 km2)
  Land483 sq mi (1,250 km2)
  Water7.1 sq mi (18 km2)  1.4%
Population
 (2020)
  Total
64,727
  Density130/sq mi (51/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district9th
Websitewww.columbiapa.org
DesignatedJuly 11, 1983

Columbia County is a county in the Commonwealth of Pennsylvania, United States. As of the 2020 census, the population was 64,727. Its county seat is Bloomsburg. The county was created on March 22, 1813, from part of Northumberland County. It was named Columbia, alluding to the United States and Christopher Columbus. The county is part of the Central region of the commonwealth.

Columbia County is part of the Bloomsburg–Berwick metropolitan area.