'Armstrong County, PA' definitions:
Armstrong -- U.S. County in Pennsylvania
From: Gazetteer 2000
Name :
Armstrong -- U.S. County in Pennsylvania
Population (2000) :
72392
Housing Units (2000) :
32387
Land area (2000) :
653.929625 sq. miles (1693.669882 sq. km)
Water area (2000) :
10.513980 sq. miles (27.231081 sq. km)
Total area (2000) :
664.443605 sq. miles (1720.900963 sq. km)
Located within :
Pennsylvania (PA), FIPS 42
Location :
40.788044 N, 79.503055 W