'Derry' definitions:

Derry, NH -- U.S. Census Designated Place in New Hampshire

From: Gazetteer 2000
Name :
Derry, NH -- U.S. Census Designated Place in New Hampshire
Population (2000) :
22661
Housing Units (2000) :
8942
Land area (2000) :
15.423046 sq. miles (39.945504 sq. km)
Water area (2000) :
0.251435 sq. miles (0.651214 sq. km)
Total area (2000) :
15.674481 sq. miles (40.596718 sq. km)
FIPS code :
17860
Located within :
New Hampshire (NH), FIPS 33
Location :
42.883929 N, 71.308537 W
ZIP Codes (1990) :
03038
Note :
some ZIP codes may be omitted esp. for suburbs.

Derry, PA -- U.S. borough in Pennsylvania

From: Gazetteer 2000
Name :
Derry, PA -- U.S. borough in Pennsylvania
Population (2000) :
2991
Housing Units (2000) :
1317
Land area (2000) :
0.809140 sq. miles (2.095664 sq. km)
Water area (2000) :
0.019214 sq. miles (0.049763 sq. km)
Total area (2000) :
0.828354 sq. miles (2.145427 sq. km)
FIPS code :
18960
Located within :
Pennsylvania (PA), FIPS 42
Location :
40.333037 N, 79.301011 W
ZIP Codes (1990) :
15627
Note :
some ZIP codes may be omitted esp. for suburbs.