'Mercerville' definitions:

Mercerville-Hamilton Square, NJ -- U.S. Census Designated Place in New Jersey

From: Gazetteer 2000
Name :
Mercerville-Hamilton Square, NJ -- U.S. Census Designated Place in New Jersey
Population (2000) :
26419
Housing Units (2000) :
9539
Land area (2000) :
7.705379 sq. miles (19.956840 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
7.705379 sq. miles (19.956840 sq. km)
FIPS code :
45495
Located within :
New Jersey (NJ), FIPS 34
Location :
40.231242 N, 74.675324 W
ZIP Codes (1990) :
08619
Note :
some ZIP codes may be omitted esp. for suburbs.