Ontario, Oregon

Ontario
Ontario, Oregon
Main Street (now Oregon Street) looking south, early 1920s
Motto: 
Where Oregon Begins
Location in Oregon
Coordinates: 44°1′37″N 116°58′7″W / 44.02694°N 116.96861°W / 44.02694; -116.96861
Country United States
State Oregon
CountyMalheur
Incorporated1899
Named afterOntario, Canada
Government
  MayorDeborah Folden
Area
  Total
5.17 sq mi (13.38 km2)
  Land5.17 sq mi (13.38 km2)
  Water0.00 sq mi (0.00 km2)
Elevation
2,150 ft (655 m)
Population
 (2020)
  Total
11,645
  Density2,254.60/sq mi (870.42/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (Mountain)
ZIP code
97914
Area code541
FIPS code41-54900
GNIS feature ID1125001
Website"City of Ontario, Oregon".

Ontario is the largest city in Malheur County, Oregon, United States. It lies along the Snake River at the Idaho border. The population was 11,645 at the 2020 census. The city is the largest community in the region of far eastern Oregon, also known as the Western Treasure Valley.

Ontario is the principal city of the Ontario, OR-ID Micropolitan Statistical Area, which includes Malheur County in Oregon and Payette County in Idaho.

Ontario is approximately halfway between Portland and Salt Lake City. It is the closest city to the Idaho border along Interstate 84. The city's slogan is "Where Oregon Begins".