San Mateo, California
City of San Mateo
MCB-san-mateo-aerial.jpg
Official seal of San Mateo, California
Seal
Location in San Mateo County and the state of California
Location in San Mateo County and the state of California
San Mateo, California is located in California
San Mateo, California
San Mateo, California
Location in California
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Coordinates: 37°33′15″N 122°18′47″WCoordinates37°33′15″N 122°18′47″W
Country United States
State California
CountySan Mateo
IncorporatedSeptember 4, 1894[1]
Named forSt. Matthew
Government
 • MayorDiane Papan[2]
 • City managerDrew Corbett[3]
Area
 • Total15.88 sq mi (41.14 km2)
 • Land12.13 sq mi (31.42 km2)
 • Water3.75 sq mi (9.72 km2)  23.63%
Elevation46 ft (14 m)
Population 
 • Total97,207 (US: 292nd)
 • Estimate 
(2017)[7]
104,748
 • Density8,570.40/sq mi (3,309.14/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
ZIP codes[8]
94401–94404, 94497
Area code650
FIPS code06-68252
GNIS feature IDs16595842411800
Primary AirportSan Francisco International Airport
SFO (Major/International)
U.S. RoutesUS 101 (1961 cutout).svg
State RoutesCalifornia 82.svg California 92.svg
Commuter RailCaltrain CAHSR (planned)
Websitewww.cityofsanmateo.org