Ontario, California Population 2023

178,667

Ontario is a city located in San Bernardino County California. With a 2023 population of 178,667, it is the 27th largest city in California and the 155th largest city in the United States.Ontario is currently growing at a rate of 0.64% annually and its population has increased by 0.27% since the most recent census, which recorded a population of 178,194 in 2020. Spanning over 50 miles, Ontario has a population density of 3,576 people per square mile.

The average household income in Ontario is $77,568 with a poverty rate of 16.86%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Ontario is 32.3 years, 31.7 years for males, and 33.1 years for females.

Ontario is located in southwestern San Bernardino County, California about 35 miles east of Los Angeles. Ontario is part of Southern California's Inland Empire, which is made up of Riverside and San Bernardino counties. It's also part of the Greater Los Angeles metro area, the second largest metropolitan area in the U.S. with a population of 18.7 million.

Diversity

About 27.5% of Ontario's population was born outside of the country. The city is one of many in the United States with a Hispanic majority: nearly three-quarters of Ontario's residents are Hispanic or Latino. This is in line with the rest of the Inland Empire which became majority Hispanic in 2016. The city continues to diversify with growing African-American and Asian communities as well.

Population Growth

Ontario has always attracted residents for its ideal climate, strong economy, and ideal location between San Bernardino and Los Angeles. Its population growth is expected to continue steadily at a rate of about 0.75% to 1% per year.

The area of Ontario was once an active American Indian settlement. In 1819, the San Bernardino Asistencia outpost of the San Gabriel mission was established in present-day Redlands, about 27 miles east of Ontario. The region then became part of an area called San Antonio.

It wasn't until the secularization of land holdings in California in 1834 that the area of Ontario was developed. In 1881, William and George Chaffey purchased the land along with current-day Upland. The brothers channeled water into the area to irrigate crops and prevent floods then created the main street of Euclid Avenue. The town was called a Model Colony because it balanced agriculture with urban amenities like churches and businesses but it was originally a dry town. The town was named Ontario in honor of Ontario province in Canada where the brothers were bor.

Ontario quickly attracted citrus farmers and Easterners who wanted a dry climate. By 1891, Ontario was incorporated. Fifteen years later, North Ontario broke away from the city and became Upland. Ontario quickly grew, increasing its population 10 times in the next 50 years the again in the next five decades, growing from 20,000 in the 1950s to 158,000 in 2000.

Ontario Demographics

According to the most recent ACS, the racial composition of Ontario was:

  • White: 46.77%
  • Other race: 27.36%
  • Two or more races: 12.56%
  • Asian: 6.27%
  • Black or African American: 5.76%
  • Native American: 0.95%
  • Native Hawaiian or Pacific Islander: 0.33%
The current population of Ontario, California is 178,667 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 178,194.

Ontario, California Population 2023

Ontario Metro Area Population by Year

Population by Race

White

Other race

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Ontario Population by Race

Ontario Population Pyramid 2023

Ontario Median Age

32.3

Total

31.7

Male

33.1

Female

Ontario Adults

There are 131,349 adults, (16,925 of whom are seniors) in Ontario.

Ontario Age Dependency

55.7

Age Dependency Ratio

14.8

Old Age Dependency Ratio

40.9

Child Dependency Ratio

Ontario Sex Ratio

Female90,87251.00%
Male87,32249.00%

Ontario Population by Age

Ontario Renter vs Owner Occupied by Household Type

3.94

Average Family Size

3.51

Average Household Size

54.6%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Ontario Households and Families

Male

Female

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Ontario Educational Attainment by Sex (over 25)

Ontario Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

The highest rate of high school graduation is among white people with a rate of 82.26%.

The highest rate of bachelors degrees is among asian people with a rate of 43.44%.

Ontario Educational Attainment by Race

All

Male

Female

$36,910

Average Earnings

$40,960

Average Male

$31,797

Average Female

Ontario Earnings by Educational Attainment

Ontario Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Ontario Language

44.43% of Ontario residents speak only English, while 55.57% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 49.54% of the population.

Ontario Language

Ontario Poverty by Race

rate

16.86%

Overall Poverty Rate

11.84%

Male Poverty Rate

14.61%

Female Poverty Rate

Poverty in Ontario

The race most likely to be in poverty in Ontario is Native, with 34.35% below the poverty level.

The race least likely to be in poverty in Ontario is Islander, with 0.63% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.95%. Among those working part-time, it was 14.89%, and for those that did not work, the poverty rate was 17.93%.

Ontario Poverty

Ontario Poverty Rate by Education

Ontario Poverty Rate by Employment Status and Sex

Ontario Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

mean

median

Income by Household Type

Ontario Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

43.5%

Overall Marriage Rate

44.2%

Male Marriage Rate

42.9%

Female Marriage Rate

Ontario Married by Age and Sex

male

female

Ontario Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Ontario Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Ontario Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,237

Number of Veterans

3,786

Male Veterans

451

Female Veterans

Ontario Veterans by War

Ontario Veterans by Age

count

Ontario Veterans by Race

Ontario Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.92%

Veteran Poverty Rate

29.99%

Veteran Disability Rate

Ontario Veterans by Education

LaborForceParticipation

67.1%

Labor Force Participation

62.7%

Employment Rate

6.5%

Unemployment Rate

Ontario Employment by Age

LaborForceParticipation

Ontario Employment by Race

LaborForceParticipation

Ontario Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

64.78%

Born in Ontario

74.42%

Native Born

27.25%

Foreign Born

14.70%

Non Citizen

12.56%

Naturalized

Place of Birth

74.42% of Ontario residents were born in the United States, with 64.78% having been born in California. 14.70% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Ontario Place of Birth

Note: data after 2020 is projected based on recent growth

Ontario Population by Year