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