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