WordNet (r) 3.0 (2006):

Maricopa
    n 1: a member of a North American Indian people of the Gila
         river valley in Arizona
    2: the Yuman language spoken by the Maricopa and the Halchidhoma

U.S. Gazetteer Counties (2000):

Maricopa -- U.S. County in Arizona
   Population (2000):    3072149
   Housing Units (2000): 1250231
   Land area (2000):     9203.137806 sq. miles (23836.016480 sq. km)
   Water area (2000):    21.128468 sq. miles (54.722478 sq. km)
   Total area (2000):    9224.266274 sq. miles (23890.738958 sq. km)
   Located within:       Arizona (AZ), FIPS 04
   Location:             33.494514 N, 112.087906 W
   Headwords:
    Maricopa
    Maricopa, AZ
    Maricopa County
    Maricopa County, AZ


U.S. Gazetteer Places (2000):

Maricopa, AZ -- U.S. Census Designated Place in Arizona
   Population (2000):    1040
   Housing Units (2000): 329
   Land area (2000):     4.037027 sq. miles (10.455851 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    4.037027 sq. miles (10.455851 sq. km)
   FIPS code:            44410
   Located within:       Arizona (AZ), FIPS 04
   Location:             33.056702 N, 112.046656 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Maricopa, AZ
    Maricopa


U.S. Gazetteer Places (2000):

Maricopa, CA -- U.S. city in California
   Population (2000):    1111
   Housing Units (2000): 460
   Land area (2000):     1.501904 sq. miles (3.889914 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.501904 sq. miles (3.889914 sq. km)
   FIPS code:            45736
   Located within:       California (CA), FIPS 06
   Location:             35.058276 N, 119.401164 W
   ZIP Codes (1990):     93252
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Maricopa, CA
    Maricopa