'Northumberland County, PA' definitions:

Northumberland -- U.S. County in Pennsylvania

From: Gazetteer 2000
Name :
Northumberland -- U.S. County in Pennsylvania
Population (2000) :
94556
Housing Units (2000) :
43164
Land area (2000) :
459.910657 sq. miles (1191.163083 sq. km)
Water area (2000) :
17.468738 sq. miles (45.243823 sq. km)
Total area (2000) :
477.379395 sq. miles (1236.406906 sq. km)
Located within :
Pennsylvania (PA), FIPS 42
Location :
40.863236 N, 76.687307 W