The Collaborative International Dictionary of English v.0.48:

Dannebrog \Dan"ne*brog\, n.
   The ancient battle standard of Denmark, bearing figures of
   cross and crown.
   [1913 Webster]

   Order of Dannebrog, an ancient Danish order of knighthood.
      [1913 Webster]

U.S. Gazetteer Places (2000):

Dannebrog, NE -- U.S. village in Nebraska
   Population (2000):    352
   Housing Units (2000): 152
   Land area (2000):     0.356549 sq. miles (0.923458 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.356549 sq. miles (0.923458 sq. km)
   FIPS code:            12140
   Located within:       Nebraska (NE), FIPS 31
   Location:             41.118595 N, 98.546749 W
   ZIP Codes (1990):     68831
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dannebrog, NE
    Dannebrog