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