Briarcliffe Acres is a town in Horry County, South Carolina, United States, located between Myrtle Beach and North Myrtle Beach. The population was 457 at the 2010 census. Briarcliffe Acres is located in southeastern Horry County at 33°47′21″N 78°44′50″W / 33.78917°N 78.74722°W. It is bordered to the north and east by the city of North Myrtle Beach. U.S…Briarcliffe Acres is a town in Horry County, South Carolina, United States, located between Myrtle Beach and North Myrtle Beach. The population was 457 at the 2010 census. Briarcliffe Acres is located in southeastern Horry County at 33°47′21″N 78°44′50″W / 33.78917°N 78.74722°W. It is bordered to the north and east by the city of North Myrtle Beach. U.S. Route 17 forms the northern border of the town, leading northeast 4 miles to the center of North Myrtle Beach and southwest 11 miles to the center of Myrtle Beach.