Where is Ontario, California, USA?

Written and Fact-checked by | Updated On: November 23, 2025, 12:40 ET

Where is Ontario Located? - Ontario is a city located in the San Bernardino County of California, United States. Ontario lies between 39.5758 Degrees North latitudes and 105.1122 Degrees West longitudes.

Location Map of Ontario, California

Where is Ontario, California

Ontario Map, California, USA

Where is Ontario?: The Google Map showing the location of Ontario in the U.S. state of California.

Where is Ontario Located?

Ontario is a city located in the San Bernardino County of California, United States. Ontario lies between 39.5758 Degrees North latitudes and 105.1122 Degrees West longitudes. According to 2020 U.S.census, the population of Ontario city is 175265 people and the city has a total area of 49.96 sq mi. The city has numerous parks and recreational facilities.

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  • Ontario City Facts, California

    City NameOntario
    NicknamesGateway to Southern California
    CountySan Bernardino County
    StateCalifornia (CA)
    CountryUnited States
    U.S. RegionWestern United States (Inland Empire)
    Coordinates34.0633° N, 117.6509° W
    Latitude34.0633
    Longitude-117.6509
    Elevation1,004 ft (306 m)
    Founded1882
    IncorporatedDecember 10, 1891
    Population (2020 Census)175,265
    Area (Sq mi)Total: 50.01 | Land: 49.95 | Water: 0.06
    Population Density (Sq mi)3,504
    DemonymOntarian
    CurrencyU.S. Dollar ($ - USD)
    Time ZonePacific Time Zone (UTC−08:00), DST UTC−07:00
    ZIP Codes91710, 91761, 91762, 91764
    Area Code909
    Government TypeMayor–Council
    Nearest Major AirportOntario International Airport (ONT)
    Other Nearby AirportsLAX (Los Angeles International), John Wayne Airport (SNA)
    Major HighwaysI-10, I-15, SR-60, SR-83
    Climate TypeSemi-Arid (Hot summers, mild winters)
    Average Annual Temperature64°F (18°C)
    Average Annual Rainfall14 inches (356 mm)
    Major IndustriesLogistics, Warehousing, Retail, Aviation, Manufacturing, Agriculture
    Known ForOntario Mills Mall, Ontario International Airport, Logistics Hub
    Places to VisitOntario Mills, Graber Olive House, Cucamonga-Guasti Regional Park, Ontario Museum of History & Art, Toyota Arena
    Nearby Major CitiesLos Angeles (35 mi), Anaheim (27 mi), Riverside (24 mi)
    Official Websitehttps://www.ontarioca.gov

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