Highlands Ranch, CO
Highlands Ranch is a census-designated place (CDP) in Douglas County, Colorado, United States. The population was 96,713 at the 2010 census; it is one of the most populous unincorporated communities in the United States. The Littleton Post Office (ZIP Codes 80126, 80129, 80130, and 80163) serves Highlands Ranch.
Highlands Ranch is located at 39°32′40″N 104°58′5″W / 39.54444°N 104.96806°W / 39.54444; -104.96806 (39.544549, -104.968080).
According to the United States Census Bureau, the CDP has a total area of 23.5 square miles (61.0 km²), of which, 23.5 square miles (60.9 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.09%) is water.