Introduction to Ontario, Oregon

Ontario, Oregon, in Malheur county, is 39 miles NW of Nampa, Idaho and 298 miles E of Portland, Oregon. About 10,985 people live in Ontario.

Ontario History

Ontario was founded by Daniel Smith, William Morfitt, James Virtue and Mary Richardson on June 11, 1883. The city was named after the province of Ontario, Canada. It was officially incorporated in 1896. The city is located in Malheur County, which was created on February 17, 1887. Oregon is also referred to as the Western Treasure Valley.

Ontario and nearby Attractions

  • Four Rivers Cultural Center & Museum
  • Farewell Bend State Recreation Area
  • Succor Creek State Natural Area
  • Ontario Municipal Golf Course
  • Lake Owyhee State Park
  • Ontario State Recreation Site

Things To Do In Ontario

Ontario offers a wide variety of recreational opportunities in the form of Laxson Park, Eastside Park, Beck-Kiwanis Park, Lions Park and Treasure Valley Ball Park. The Four Rivers Cultural Center and Museum is a popular local spot as well. The Ontario State Recreation Site, the Farewell Bend State Recreation Area and the Succor Creek State Natural Area are all nearby. The Ontario Municipal Golf Course provides facilities for local golfers. Ontario hosts the Malheur County Fair every August.

Ontario Transportation

Boise Airport provides facilities for air transportation.

Ontario Higher Education

Treasure Valley Community College is the local institution of higher education. Boise State University, Walla Walla Community College and Eastern Oregon University offer courses in higher studies.


Total Population 11,089
Male Share of the Population 47.9%
Female Share of the Population 52.1%
Senior Citizens 16.1%
Employed Population 16+ 4,037
Age of the Population 33


% of people married 41.7%
Average household size 2

Education and Earnings

Population % with Bachelor Degree or Higher 15.2%
Median Earnings25+ $24,269
Median Earnings Without High School Qualification $14,966
Median Earnings With High School Degree $22,558


Median Family Income $37,946
% Above Poverty Level 64.9%
% Below Poverty Level 35.1%

Commute & Sprawl

Average Commute Time 15 minutes
% Working from Home 3.2%
% Walking and Biking to Work 7.9%
% Using Public Transportation 0.1%


People Living Alone 36%
Median Gross Rent $607
Median House Value $114,700


Other(often includes Hispanic and African American) 45.6%
US/American 0%
English 8.1%
Irish 13%

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Ontario Almanac

Category Value
Nearest Medium City 39 miles NW of Nampa, Idaho (center to center)
Nearest Large City 298 miles E of Portland, Oregon
County Malheur
Standard Zip Codes 97914
Phone Area Codes 541
Time Zone Mountain (-7 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 44.026
Longitude -116.961

Ontario Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Distance 1.6 miles
Jan Temp 18 to 34 F
Apr Temp 37 to 65 F
Jul Temp 57 to 93 F
Oct Temp 34 to 66 F
Annual Precip 9.4 inches
Distance 4.2 miles
Jan Temp 20 to 37 F
Apr Temp 38 to 66 F
Jul Temp 59 to 91 F
Oct Temp 37 to 68 F
Annual Precip 11 inches
Station WEISER
Distance 15.5 miles
Jan Temp 21 to 35 F
Apr Temp 40 to 65 F
Jul Temp 60 to 91 F
Oct Temp 38 to 66 F
Annual Precip 12 inches

Neighborhood and Nearby Area Names

According to the US Postal Service, Ontario, its neighborhoods, and/or surrounding areas are also referred to as:

Cairo (97914)

Claude (97914)

Note that not all alternate names are acceptable for use in US Post Office addresses.

Nearby Cities and Towns

Location Population Median Family Income
Adrian 154 $39,375
Nyssa 3,189 $50,197
Vale 1,850 $48,095

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Ontario Public Libraries

Malheur County Library
388 SW 2ND AVE
Ontario, Oregon
(541) 889-6371

library logo

More Information for Librarians

Ontario Hospitals

(Voluntary non-profit - Private)
(541) 881-7000
Emergency Service: Yes

These schools offer particularly quick info upon request, and we have written detailed profiles for each (click school names to see the profiles). Request info from multiple schools, by clicking the Request Info links.
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Ontario High Schools

Serves 748 students.
Student/teacher ratio: 17

Ontario Colleges

Click school name for a detailed profile.

Additional Details
Ontario Colleges
Ontario colleges and trade schools.
Study Online in Ontario

Career and College Resources

Real-World Career Reports
Career References and Original Articles
College Directories and Lists
Additional Resources
Info for Ontario Government Officials

Are you an official in the Ontario government or quasi-government agency such as the chamber of commerce, visitors bureau or economic development council? If so, visit our information page for government officials to see how CityTownInfo can support you.

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