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