'San Mateo County' definitions:
San Mateo -- U.S. County in California
From: Gazetteer 2000
Name :
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