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Ontario is the largest city in Malheur County, Oregon, United States. It lies along the Snake River at the Idaho border. The population was 11,366 at the 2010 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".HistoryOntario was founded on June 11, 1883, by developers William Morfitt, Mary Richardson, Daniel Smith, and James Virtue. In March 1884, Richard Welch started a post office for the quarter of Ontario, so named by James Virtue after Ontario, Canada. Two months later Joseph Morton applied for a Morton post office at an island about one mile south of town, with Oscar Scott as postmaster. Unfortunately for Morton and Scott, merchants Morfitt and Richardson of Malheur City, gold miner Virtue, and lumberman Smith of Baker City acquired more land and were better financed. More importantly, Morfitt had negotiated a train depot for Ontario. All the settlers and speculators knew the railroad was coming and how important that would be to Ontario's future so Scott closed his Morton post office and built a hotel at present-day Ontario. By December, Scott was Ontario's postmaster.Make your own Ontario vacation itinerary, with a little help from those that know the place like the back of their hands, by using our United States sightseeing tool.
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