Harrison information on the site is deemed reliable, but not guaranteed. Our Harrison stats, Harrison census, and Harrison information is aggregated from many different sources and may be dated. Currently, we have ten Harrison foreclosures of six thousand six hundred two Harrison, Iowa housing units housing units, of which six thousand one hundred fifteen are occupied, four thousand six hundred eighty-four are owner occupied, one thousand four hundred thirty-one are rented, four hundred eighty-seven are vacant, and two thousand eighteen have mortgages. has six thousand one hundred fifteen households, and fifteen thousand six hundred sixty-six citizens.