Acres Green is an unincorporated community and a census-designated place (CDP) located in and governed by Douglas County, Colorado, United States. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The population of the Acres Green CDP was 2,922 at the 2020 United States Census. It is bordered by Lone Tree to the north, east and south and Highlands Ranch to the west. The community lies in ZIP Code 80124.

Douglas County is a county located in the U.S. state of Colorado. As of the 2020 Census, the population was 357,978. The county is named in honor of U.S. Senator Stephen A. Douglas. The county seat is Castle Rock.