WordNet (r) 3.0 (2006):

San Mateo
    n 1: a town in California to the south of San Francisco

U.S. Gazetteer Counties (2000):

San Mateo -- U.S. County in California
   Population (2000):    707161
   Housing Units (2000): 260576
   Land area (2000):     449.066661 sq. miles (1163.077263 sq. km)
   Water area (2000):    291.946638 sq. miles (756.138288 sq. km)
   Total area (2000):    741.013299 sq. miles (1919.215551 sq. km)
   Located within:       California (CA), FIPS 06
   Location:             37.531037 N, 122.331932 W
   Headwords:
    San Mateo
    San Mateo, CA
    San Mateo County
    San Mateo County, CA


U.S. Gazetteer Places (2000):

San Mateo, CA -- U.S. city in California
   Population (2000):    92482
   Housing Units (2000): 38249
   Land area (2000):     12.217691 sq. miles (31.643673 sq. km)
   Water area (2000):    3.738667 sq. miles (9.683103 sq. km)
   Total area (2000):    15.956358 sq. miles (41.326776 sq. km)
   FIPS code:            68252
   Located within:       California (CA), FIPS 06
   Location:             37.554286 N, 122.313044 W
   ZIP Codes (1990):     94402 94403
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    San Mateo, CA
    San Mateo