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