Santa Rita is a planned community and census-designated place (CDP) in Williamson County, Texas, United States. It was first listed as a CDP during the 2020 census. As of the 2020 census, Santa Rita Ranch had a population of 3,152. It sits on 3,100-acres. It is in the western part of the county, 11 miles (18 km) west of Georgetown, the county seat, and 6 miles (10 km) northeast of Liberty Hill. Ronald Reagan Boulevard, a western bypass of the Georgetown area, is the main road through the CDP.