Ontario, California
City
City of Ontario
The Ontario Convention Center in September 2006.
Flag Seal Coat of arms Police seal
Motto(s): Southern California's Next Urban Center[1]
Location in San Bernardino County in the state of California
Ontario, California Location in the United States
Coordinates: 34°03′10″N 117°37′40″W
Country	United States of America
State	California
County	San Bernardino
Incorporated	December 10, 1891[2]
Named for	Ontario, Canada
Government
• Type	City Council / City Manager[1]
• City Council[5]	Mayor Paul S. Leon Mayor Pro Tem Debra Dorst-Porada Alan D. Wapner Jim W. Bowman Paul Vincent Avila
• City treasurer	James R. Milhiser[3]
• City manager	Al C. Boling[4]
Area[6]
• Total	49.99 sq mi (129.49 km2)
• Land	49.93 sq mi (129.33 km2)
• Water	0.06 sq mi (0.16 km2)  0.13%
Elevation[7]	1,004 ft (306 m)
Population (2010)[8]
• Total	163,924
• Estimate (2016)[9]	173,212
• Rank	4th in San Bernardino County 29th in California 146th in the United States
• Density	3,468.82/sq mi (1,339.31/km2)
Time zone	Pacific (UTC−8)
• Summer (DST)	PDT (UTC−7)
ZIP codes	91758, 91761, 91762, 91764
Area code	909
FIPS code	06-53896
GNIS feature IDs	1652764, 2411323
Website	www.ontarioca.gov