Om Ontario
Ontario is located in Malheur county Oregon with a geographic area of 5.2 square miles. The total population in Ontario is 11,031 with 47.4% male and 52.6% female. Children under age 5 represent 6.3% of the population, under age 18 equal 26.2% of the population and over age 65 is 18.8% of the population. The median household income is $35,917, per capita income is $21,303. There are a total of 4,315 housing units with 53.4% owner occupied. Education includes 28.4% of residents that are high school graduates and 16.7% with a bachelor's degree or higher. The average temperature in Ontario in the summer is 72 degrees, and in the winter 35 degrees.