Town guide

Ontario, California

Ontario is a city in San Bernardino County, California, home to about 180,547 people across 50 square miles. Its ZIP codes are 91761, 91762 and 91764.

Homes sold for a median of $390 per square foot across 3 ZIP codes in the three months ending August 2026, and 2 of 3 were seller’s markets.

Population180,5473,613 per sq mi
Median home value$607,600Census, as estimated by owners
Price per sq ft$390Sold homes, 3 months to August 2026
Sold over asking35%Median of 3 ZIP codes

ZIP codes in Ontario

3 ZIP codes

Each card is that ZIP code’s whole market, including any part outside Ontario. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology

The Ontario guide is on the way

We’re writing up Ontario’s story and what everyday life there is like, for people thinking about moving in.

  • History
  • What it’s like to live there
  • Getting around
  • Things to do

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Around Ontario

Distances

Nearest major airportOntario International Airport (ONT)2 miles away
Nearest city of 250,000+Anaheim, CA15 miles away
Nearest city of 1 million+Los Angeles, CA45 miles away

Straight-line distances from the center of Ontario; driving is longer.

Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.

Who represents Ontario

Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.

Population over time

Ontario had 175,265 residents in the 2020 census, up 11% since 2000.

It’s the 25th largest of 1,563 towns in California by population.

San Bernardino County grew from 27,929 residents in 1900 to 2,181,654 in 2020.

Ontario population by census2000: 158,007, 2010: 163,924, 2020: 175,265158,0072000163,9242010175,2652020

San Bernardino County, 1900–2020

San Bernardino County population, 1900 to 20201900: 27,929, 1910: 56,706, 1920: 73,401, 1930: 133,900, 1940: 161,108, 1950: 281,642, 1960: 503,591, 1970: 684,072, 1980: 895,016, 1990: 1,418,380, 2000: 1,709,434, 2010: 2,035,210, 2020: 2,181,65428K’00’1073K’20’30161K’40’50504K’60’70895K’80’901.7M’00’102.2M’20

Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).

Weather by month

Average highs peak around 95°F in summer, and winter lows average 44°F. About 11.7 inches of rain and melted snow fall in a typical year.

Average high and low temperature and precipitation by month near OntarioJan: high 68°F, low 45°F, 2.6 in; Feb: high 68°F, low 46°F, 3.1 in; Mar: high 72°F, low 49°F, 1.6 in; Apr: high 76°F, low 51°F, 0.8 in; May: high 80°F, low 56°F, 0.3 in; Jun: high 86°F, low 60°F, 0 in; Jul: high 94°F, low 65°F, 0.1 in; Aug: high 95°F, low 65°F, 0 in; Sep: high 91°F, low 64°F, 0.1 in; Oct: high 83°F, low 57°F, 0.4 in; Nov: high 75°F, low 49°F, 0.8 in; Dec: high 67°F, low 44°F, 1.9 in68°45°Jan2.668°46°Feb3.172°49°Mar1.676°51°Apr0.880°56°May0.386°60°Jun0.094°65°Jul0.195°65°Aug0.091°64°Sep0.183°57°Oct0.475°49°Nov0.867°44°Dec1.9Rain and melted snow, inches

Source: NOAA 1991–2020 climate normals, Ontario Intl Ap, CA weather station (2 miles away).

Jobs in San Bernardino County

718,612 jobs at 42,571 businesses in San Bernardino County. The biggest industries by employees:

Largest industries in San Bernardino CountyHealth care and social assistance: 114,857 jobs; Retail trade: 112,696 jobs; Transportation and warehousing: 109,423 jobs; Hotels and restaurants: 82,360 jobs; Manufacturing: 52,826 jobs; Wholesale trade: 45,538 jobs; Administrative and support: 44,686 jobs; Construction: 38,488 jobsHealth care and social assistance 16% Retail trade 16% Transportation and warehousing 15% Hotels and restaurants 12% Manufacturing 7% Wholesale trade 6% Administrative and support 6% Construction 5%

Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).

Health care

1,101 doctors and other health care providers list an office in Ontario’s ZIP codes.

Nearest hospitals

  • Chino Valley Medical CenterGeneral hospital · emergency room · CMS rating 4 of 5 · Chino3.3 miles
  • San Antonio Regional HospitalGeneral hospital · emergency room · CMS rating 3 of 5 · Upland3.8 miles
  • Montclair Hospital Medical CenterGeneral hospital · emergency room · CMS rating 3 of 5 · Montclair4.2 miles

Providers with an office here

Primary care doctors47
Specialist doctors40
Dentists117
Nurse practitioners and physician assistants142
Mental health providers612
Physical and occupational therapists79
Optometrists26
Chiropractors38
Pharmacies32

Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.

Places in and around Ontario

Parks (85 nearby)

  • Ontario Grand Park · 137 acres4.6 mi
  • Ruben S Ayala Park · 115 acres4.6 mi
  • Cucamonga-Guasti Regional Park · 68 acres3.2 mi
  • Upland Memorial Park · 41 acres4.0 mi
  • John Galvin Park · 35 acres2.1 mi
  • Westwind Park · 25 acres2.6 mi

Grocery stores (29 nearby)

  • Cardenas1.2 mi
  • Grocery Outlet1.3 mi
  • Food 4 Less1.5 mi
  • Cardenas1.7 mi

Pharmacies (15 nearby)

  • Rite Aid2.5 mi
  • Walgreens2.9 mi
  • Rite Aid2.9 mi
  • Rite Aid3.0 mi

Libraries (9 nearby)

  • University of La Verne - Law Library1.6 mi
  • Ontario Ovitt Family Community Library1.7 mi
  • Upland Public Library3.8 mi
  • Weber Memorial Library3.8 mi
  • Chino Branch San Bernardino County Library3.9 mi

Museums (8 nearby)

  • Chaffey Community Museum of Art1.5 mi
  • Ontario Museum of History & Art1.5 mi
  • Cooper Regional History Museum3.5 mi
  • Chino Youth Museum4.0 mi
  • Planes of Fame Air Museum4.4 mi

Theaters and performance venues (1 nearby)

  • Garland Rogers Memorial Pavilion4.0 mi

Counts are within about 4.5 miles of the center of town.

Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.

Colleges, teams and notable people

Sports teams

  • Ontario Reign American Hockey League
  • San Diego Clippers NBA G League

Notable people born here

  • Landon Donovan (1982) · American soccer player
  • Jeff Ayres (1987) · American basketball player (born 1987)
  • Richard Carrier (1969) · American historian and philosopher
  • Harold Smith (1909) · diver
  • Prince Fielder (1984) · American baseball player
  • Cle Kooiman (1963) · American soccer player
  • Sol Ruca (1999) · American professional wrestler (born 1999)
  • Anthony Muñoz (1958) · American football player

Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.

Schools in Ontario

Public schools here are run by Ontario-Montclair, Mountain View Elementary, Chino Valley Unified and others. Check each district’s attendance zones for a specific address.

Public schools (40)
SchoolGradesStudentsTypeDistance
Arroyo ElementaryOntarioK–8493Public3.1 mi
Berlyn ElementaryOntarioK–6639Public2.6 mi
Bon View ElementaryOntarioK–6598Public0.8 mi
Central Language AcademyOntarioK–8736Public1.9 mi
Corona ElementaryOntarioK–6414Public2.5 mi
Creek View ElementaryOntarioK–6566Public3.9 mi
Del Norte ElementaryOntarioK–6428Public2.0 mi
Edison ElementaryOntarioK–8736Public2.8 mi
El Camino ElementaryOntarioK–6476Public3.6 mi
Elderberry ElementaryOntarioK–6544Public3.1 mi
Euclid ElementaryOntarioK–6572Public1.2 mi
Hawthorne ElementaryOntarioK–6549Public3.0 mi
Levi H. Dickey ElementaryOntarioK–6413Public1.7 mi
Liberty ElementaryOntarioK–6578Public1.5 mi
Lincoln ElementaryOntarioK–6530Public1.5 mi
Mariposa ElementaryOntarioK–6537Public1.7 mi
Mission ElementaryOntarioK–6571Public2.9 mi
Montera ElementaryMontclairK–6564Public4.0 mi
Mountain View ElementaryOntarioK–6564Public2.7 mi
Online AcademyOntarioK–8125Alternative Education0.2 mi
Ontario CenterOntarioK–5585Public3.5 mi
Park View ElementaryOntarioK–6844Public4.9 mi
Ranch View ElementaryOntarioK–6738Public3.4 mi
Richard Haynes ElementaryOntarioK–6641Public1.8 mi
Sultana ElementaryOntarioK–6589Public0.8 mi
Vineyard ElementaryOntarioK–8562Public2.7 mi
Vista Grande ElementaryOntarioK–6358Public2.4 mi
Ray Wiltsey MiddleOntario6–8727Public1.8 mi
De Anza MiddleOntario7–8510Public0.8 mi
Grace Yokley Junior HighOntario7–8606Public3.3 mi

And 10 more.

Private schools (9)
SchoolGradesStudentsAffiliationDistance
Mount Zion Christian SchoolOntarioPre-K–K2Christian (no specific denomination)1.4 mi
Ontario Christian SchoolOntarioPre-K–121,438Christian (no specific denomination)2.1 mi
San Antonio Christian SchoolOntarioTK–860Seventh-day Adventist3.3 mi
St George Parish SchoolOntarioTK–8316Roman Catholic1.9 mi
Montecito Baptist SchoolOntarioK–1296Baptist2.4 mi
Orion International AcademyOntarioK–12112Nonsectarian3.2 mi
Port View PreparatoryOntario1–12163Nonsectarian4.2 mi
The Good Shepherd AcademyOntario1–852Nonsectarian3.1 mi
Wesley College Preparatory SchoolOntario9–12150Christian (no specific denomination)3.3 mi

Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.

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Where Ontario is

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Towns near Ontario

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Shares ZIP codes with Montclair.

Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.