The tracking shows "Ontario,CA 91761" as the origin, which is a US zip code. You can thank the two founding idiots of the town for the confusion. Naming a town "Ontario" in any other state would not have followed it with "CA," which is the abbreviation for both California AND Canada.
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From wikipedia:
Ontario is a city located in south west San Bernardino County, California, United States, 35 miles east of downtown Los Angeles. Located in the western part of the Inland Empire region, it lies just east of the Los Angeles county line and is part of the Greater Los Angeles Area. As of the 2010 Census, the city had a population of 163,924, down from 170,373 at the 2000 census, making it the county's fourth most populous city after San Bernardino, Fontana, and Rancho Cucamonga.
The 1834 secularization of California land holdings resulted in the land's transferral to private hands. In 1881, the Chaffey brothers George and William purchased the land (which at that time also included the present-day city of Upland) and the water rights to it. .... The two named the town "Ontario" in honor of the province of Ontario in Canada, where they were born.