Carolina Forest is a census-designated place in Horry County, South Carolina, United States. It was first listed as a CDP in the 2020 census with a population of 23,342. It is located west of Myrtle Beach and east of Conway in an area planned by International Paper in the late 1990s. Most of the development follows the Carolina Forest Master Plan, develop…Carolina Forest is a census-designated place in Horry County, South Carolina, United States. It was first listed as a CDP in the 2020 census with a population of 23,342. It is located west of Myrtle Beach and east of Conway in an area planned by International Paper in the late 1990s. Most of the development follows the Carolina Forest Master Plan, developed cooperatively between International Paper and the Horry County Government.