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