The Collaborative International Dictionary of English v.0.48:

Clarence \Clar"ence\, n.
   A close four-wheeled carriage, with one seat inside, and a
   seat for the driver.
   [1913 Webster] Clarenceux

WordNet (r) 3.0 (2006):

clarence
    n 1: a closed carriage with four wheels and seats for four
         passengers

U.S. Gazetteer Places (2000):

Clarence, PA -- U.S. Census Designated Place in Pennsylvania
   Population (2000):    577
   Housing Units (2000): 246
   Land area (2000):     1.645946 sq. miles (4.262980 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.645946 sq. miles (4.262980 sq. km)
   FIPS code:            13768
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             41.049771 N, 77.950109 W
   ZIP Codes (1990):     16829
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Clarence, PA
    Clarence


U.S. Gazetteer Places (2000):

Clarence, IA -- U.S. city in Iowa
   Population (2000):    1008
   Housing Units (2000): 453
   Land area (2000):     0.632259 sq. miles (1.637544 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.632259 sq. miles (1.637544 sq. km)
   FIPS code:            13530
   Located within:       Iowa (IA), FIPS 19
   Location:             41.887827 N, 91.059171 W
   ZIP Codes (1990):     52216
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Clarence, IA
    Clarence


U.S. Gazetteer Places (2000):

Clarence, LA -- U.S. village in Louisiana
   Population (2000):    516
   Housing Units (2000): 205
   Land area (2000):     1.593963 sq. miles (4.128345 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.593963 sq. miles (4.128345 sq. km)
   FIPS code:            15745
   Located within:       Louisiana (LA), FIPS 22
   Location:             31.820143 N, 93.028773 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Clarence, LA
    Clarence


U.S. Gazetteer Places (2000):

Clarence, MO -- U.S. city in Missouri
   Population (2000):    915
   Housing Units (2000): 466
   Land area (2000):     1.165710 sq. miles (3.019175 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.165710 sq. miles (3.019175 sq. km)
   FIPS code:            13978
   Located within:       Missouri (MO), FIPS 29
   Location:             39.742692 N, 92.261159 W
   ZIP Codes (1990):     63437
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Clarence, MO
    Clarence