Facts About Ontario

General information about the city of Ontario in Southern California's San Bernardino County.

Quick Facts About Ontario California
TYPE: Incorporated City
DATE INCORPORATED: December 10, 1891
SIZE: About 50 square miles
POPULATION: Greater than 173,000
ELEVATION: 1,004 feet above sea level
POSTAL ZIP COEES: 91758, 91761, 91762, and 91764
TELEPHONE AREA CODE: 909
COUNTY: San Bernardino County
COUNTY REGION: Valley Region of San Bernardino County
STATE REGION: Southern California

City of Ontario
Official Web site of the government of the city of Ontario, California. Main sections of the site include Residents, Business, Visitors, Departments, jobs, Water Bills, Police, Recreation, Fire, Library Yard Sale Information, and Jobs.

Wikipedia Introduction to Ontario
Article with general information and facts about Ontario, California. Includes the city's historym, economy, top employers, arts, culture, sports, traditions, geography, climage, demographics, government, edudcdation, tourism, cemeteries, sister cities, and notable residents.

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Ontario Travel Guide

Valley Region of San Bernardino County

About San Bernardino County

California for Visitors

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