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