The Collaborative International Dictionary of English v.0.48:

Dublin \Dublin\ prop. n. (Geography)
   The capital city of Ireland. Population (2000) = nk.
   [PJC]

WordNet (r) 3.0 (2006):

Dublin
    n 1: capital and largest city and major port of the Irish
         Republic [syn: Dublin, Irish capital, capital of
         Ireland]

U.S. Gazetteer Places (2000):

Dublin, CA -- U.S. city in California
   Population (2000):    29973
   Housing Units (2000): 9872
   Land area (2000):     12.586761 sq. miles (32.599560 sq. km)
   Water area (2000):    0.007641 sq. miles (0.019791 sq. km)
   Total area (2000):    12.594402 sq. miles (32.619351 sq. km)
   FIPS code:            20018
   Located within:       California (CA), FIPS 06
   Location:             37.714229 N, 121.912496 W
   ZIP Codes (1990):     94568
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, CA
    Dublin


U.S. Gazetteer Places (2000):

Dublin, NC -- U.S. town in North Carolina
   Population (2000):    250
   Housing Units (2000): 113
   Land area (2000):     0.434611 sq. miles (1.125636 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.434611 sq. miles (1.125636 sq. km)
   FIPS code:            18040
   Located within:       North Carolina (NC), FIPS 37
   Location:             34.655812 N, 78.724845 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, NC
    Dublin


U.S. Gazetteer Places (2000):

Dublin, OH -- U.S. city in Ohio
   Population (2000):    31392
   Housing Units (2000): 12038
   Land area (2000):     21.123078 sq. miles (54.708518 sq. km)
   Water area (2000):    0.018065 sq. miles (0.046788 sq. km)
   Total area (2000):    21.141143 sq. miles (54.755306 sq. km)
   FIPS code:            22694
   Located within:       Ohio (OH), FIPS 39
   Location:             40.109262 N, 83.140247 W
   ZIP Codes (1990):     43017
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, OH
    Dublin


U.S. Gazetteer Places (2000):

Dublin, GA -- U.S. city in Georgia
   Population (2000):    15857
   Housing Units (2000): 6977
   Land area (2000):     13.206613 sq. miles (34.204968 sq. km)
   Water area (2000):    0.064643 sq. miles (0.167425 sq. km)
   Total area (2000):    13.271256 sq. miles (34.372393 sq. km)
   FIPS code:            24376
   Located within:       Georgia (GA), FIPS 13
   Location:             32.537463 N, 82.918358 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, GA
    Dublin


U.S. Gazetteer Places (2000):

Dublin, IN -- U.S. town in Indiana
   Population (2000):    697
   Housing Units (2000): 283
   Land area (2000):     0.538208 sq. miles (1.393953 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.538208 sq. miles (1.393953 sq. km)
   FIPS code:            18766
   Located within:       Indiana (IN), FIPS 18
   Location:             39.811806 N, 85.206166 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, IN
    Dublin


U.S. Gazetteer Places (2000):

Dublin, PA -- U.S. borough in Pennsylvania
   Population (2000):    2083
   Housing Units (2000): 869
   Land area (2000):     0.544474 sq. miles (1.410180 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.544474 sq. miles (1.410180 sq. km)
   FIPS code:            20104
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.373270 N, 75.202464 W
   ZIP Codes (1990):     18917
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, PA
    Dublin


U.S. Gazetteer Places (2000):

Dublin, TX -- U.S. city in Texas
   Population (2000):    3754
   Housing Units (2000): 1507
   Land area (2000):     3.405363 sq. miles (8.819850 sq. km)
   Water area (2000):    0.000482 sq. miles (0.001248 sq. km)
   Total area (2000):    3.405845 sq. miles (8.821098 sq. km)
   FIPS code:            21484
   Located within:       Texas (TX), FIPS 48
   Location:             32.086567 N, 98.342485 W
   ZIP Codes (1990):     76446
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, TX
    Dublin


U.S. Gazetteer Places (2000):

Dublin, VA -- U.S. town in Virginia
   Population (2000):    2288
   Housing Units (2000): 969
   Land area (2000):     1.423644 sq. miles (3.687220 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.423644 sq. miles (3.687220 sq. km)
   FIPS code:            23648
   Located within:       Virginia (VA), FIPS 51
   Location:             37.103114 N, 80.684702 W
   ZIP Codes (1990):     24084
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dublin, VA
    Dublin