Ontario information on the site is deemed reliable, but not guaranteed. Our Ontario stats, Ontario census, and Ontario information is aggregated from many different sources and may be dated. Currently, we have eight Ontario foreclosures of forty-two thousand six hundred forty-seven Ontario, New York housing units housing units, of which thirty-eight thousand three hundred seventy are occupied, twenty-eight thousand two hundred twenty-five are owner occupied, ten thousand one hundred forty-five are rented, four thousand two hundred seventy-seven are vacant, and fourteen thousand six hundred sixty-one have mortgages. has thirty-eight thousand three hundred seventy households, and one hundred thousand two hundred twenty-four citizens.