The Collaborative International Dictionary of English v.0.48:

Rowan \Row"an\, n.
   Rowan tree.
   [1913 Webster]

   Rowan barry, a barry of the rowan tree.
      [1913 Webster]

WordNet (r) 3.0 (2006):

rowan
    n 1: Eurasian tree with orange-red berrylike fruits [syn:
         rowan, rowan tree, European mountain ash, Sorbus
         aucuparia]

U.S. Gazetteer Counties (2000):

Rowan -- U.S. County in Kentucky
   Population (2000):    22094
   Housing Units (2000): 8985
   Land area (2000):     280.822204 sq. miles (727.326139 sq. km)
   Water area (2000):    5.428726 sq. miles (14.060336 sq. km)
   Total area (2000):    286.250930 sq. miles (741.386475 sq. km)
   Located within:       Kentucky (KY), FIPS 21
   Location:             38.187102 N, 83.433917 W
   Headwords:
    Rowan
    Rowan, KY
    Rowan County
    Rowan County, KY


U.S. Gazetteer Counties (2000):

Rowan -- U.S. County in North Carolina
   Population (2000):    130340
   Housing Units (2000): 53980
   Land area (2000):     511.313740 sq. miles (1324.296450 sq. km)
   Water area (2000):    12.545509 sq. miles (32.492719 sq. km)
   Total area (2000):    523.859249 sq. miles (1356.789169 sq. km)
   Located within:       North Carolina (NC), FIPS 37
   Location:             35.617342 N, 80.515502 W
   Headwords:
    Rowan
    Rowan, NC
    Rowan County
    Rowan County, NC


U.S. Gazetteer Places (2000):

Rowan, IA -- U.S. city in Iowa
   Population (2000):    218
   Housing Units (2000): 103
   Land area (2000):     0.562681 sq. miles (1.457338 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.562681 sq. miles (1.457338 sq. km)
   FIPS code:            69015
   Located within:       Iowa (IA), FIPS 19
   Location:             42.740145 N, 93.551047 W
   ZIP Codes (1990):     50470
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Rowan, IA
    Rowan