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