'Oak Hills' definitions:

Oak Hills, OR -- U.S. Census Designated Place in Oregon

From: Gazetteer 2000
Name :
Oak Hills, OR -- U.S. Census Designated Place in Oregon
Population (2000) :
9050
Housing Units (2000) :
3478
Land area (2000) :
1.543111 sq. miles (3.996638 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
1.543111 sq. miles (3.996638 sq. km)
FIPS code :
53988
Located within :
Oregon (OR), FIPS 41
Location :
45.540421 N, 122.841485 W
Note :
some ZIP codes may be omitted esp. for suburbs.

Oak Hills, PA -- U.S. Census Designated Place in Pennsylvania

From: Gazetteer 2000
Name :
Oak Hills, PA -- U.S. Census Designated Place in Pennsylvania
Population (2000) :
2335
Housing Units (2000) :
973
Land area (2000) :
3.227674 sq. miles (8.359637 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
3.227674 sq. miles (8.359637 sq. km)
FIPS code :
55969
Located within :
Pennsylvania (PA), FIPS 42
Location :
40.825041 N, 79.918853 W
Note :
some ZIP codes may be omitted esp. for suburbs.