who were 65 years of age or older. The median age was 45.8 years. Recent annexations have added territory and population, which will be reflected in the 2020 census. The estimated population as of 2017 is 2,903, living in 1,201 households. References Chattahoochee Hill Country Becomes a City, Fulton County Government website External links Chattahoochee Hill Country Conservancy Cities in Georgia (U.S. state) Chattahoochee Hills Cities in Fulton County, Georgia Populated places established in 2007 Georgia populated places on the Chattahoochee River