'Shelter Island' definitions:

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

From: Gazetteer 2000
Name :
Shelter Island, NY -- U.S. Census Designated Place in New York
Population (2000) :
1234
Housing Units (2000) :
964
Land area (2000) :
6.537336 sq. miles (16.931621 sq. km)
Water area (2000) :
0.144344 sq. miles (0.373848 sq. km)
Total area (2000) :
6.681680 sq. miles (17.305469 sq. km)
FIPS code :
66828
Located within :
New York (NY), FIPS 36
Location :
41.062171 N, 72.328003 W
ZIP Codes (1990) :
11964
Note :
some ZIP codes may be omitted esp. for suburbs.