'Hewlett' definitions:

Hewlett, NY -- U.S. Census Designated Place in New York

From: Gazetteer 2000
Name :
Hewlett, NY -- U.S. Census Designated Place in New York
Population (2000) :
7060
Housing Units (2000) :
2735
Land area (2000) :
0.889614 sq. miles (2.304090 sq. km)
Water area (2000) :
0.006165 sq. miles (0.015968 sq. km)
Total area (2000) :
0.895779 sq. miles (2.320058 sq. km)
FIPS code :
34286
Located within :
New York (NY), FIPS 36
Location :
40.641985 N, 73.694185 W
ZIP Codes (1990) :
11557
Note :
some ZIP codes may be omitted esp. for suburbs.