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Ontario

Also known as Ontario, California, Ontario, CA

city in San Bernardino County, California, United States

AI overview

Ontario is a city located in San Bernardino County in Southern California. It serves as an important regional hub in the Inland Empire area of California.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Official name: Ontario
Population: 175265
Area: 129.514953
Elevation: 306
Official website: www.ontarioca.gov
Image: Ontario Convention Center.jpg
Households: 50599
Dialing code: 951

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Commons category: Ontario, California
water as percent of area: 0.131
water area: 0.169608
per capita income: 24682
date of incorporation: 1891-12-10
postal code: 91764

Sources (13)

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Article

Ontario is a city in southwestern San Bernardino County, California, United States, 35 miles (56 km) east of downtown Los Angeles and 23 miles (37 km) west of downtown San Bernardino, the county seat. Located in the western part of the Inland Empire metropolitan area, it lies just east of Los Angeles County and is part of the Los Angeles conurbation. As of the 2020 census, the city had a population of 175,265.

The city is home to Ontario International Airport, which is the 8th-busiest airport in the United States by cargo carried, as of 2026. Ontario handles the mass of freight traffic between the ports of Los Angeles and Long Beach and the rest of the country.