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