The Collaborative International Dictionary of English v.0.48:

Constantia \Con*stan"ti*a\ (? or ?), n.
   A superior wine, white and red, from Constantia, in South
   Africa.
   [1913 Webster +PJC]

U.S. Gazetteer Places (2000):

Constantia, NY -- U.S. Census Designated Place in New York
   Population (2000):    1107
   Housing Units (2000): 560
   Land area (2000):     2.133689 sq. miles (5.526229 sq. km)
   Water area (2000):    0.008517 sq. miles (0.022058 sq. km)
   Total area (2000):    2.142206 sq. miles (5.548287 sq. km)
   FIPS code:            17893
   Located within:       New York (NY), FIPS 36
   Location:             43.250905 N, 76.001641 W
   ZIP Codes (1990):     13044
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Constantia, NY
    Constantia