Highlands Ranch is the #5 BEST PLACES TO RAISE A FAMILY IN COLORADO. More than 110,000 people live in the largest master-planned community in Highlands Ranch. It’s situated less than 15 miles south of Denver on a landmass that stretches 22,000 acres. The area was founded in 1981 and was known for grazing cattle but eventually transformed into a suburb. Highlands Ranch is bordered by Centennial,...