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 zero Ottawa foreclosures of two thousand seven hundred fifty-five Ottawa, Kansas housing units housing units, of which two thousand four hundred thirty are occupied, one thousand nine hundred ninety-four are owner occupied, four hundred thirty-six are rented, three hundred twenty-five are vacant, and seven hundred forty-nine have mortgages. has two thousand four hundred thirty households, and six thousand one hundred sixty-three citizens.