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