The Collaborative International Dictionary of English v.0.48:

Lynde \Lynde\, Lynden \Lyn"den\, n.
   See Linden.
   [1913 Webster]

U.S. Gazetteer Places (2000):

Lynden, WA -- U.S. city in Washington
   Population (2000):    9020
   Housing Units (2000): 3592
   Land area (2000):     4.083649 sq. miles (10.576601 sq. km)
   Water area (2000):    0.007361 sq. miles (0.019066 sq. km)
   Total area (2000):    4.091010 sq. miles (10.595667 sq. km)
   FIPS code:            40805
   Located within:       Washington (WA), FIPS 53
   Location:             48.946606 N, 122.456927 W
   ZIP Codes (1990):     98264
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Lynden, WA
    Lynden