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