Pine Ridge is an unincorporated community and census-designated place (CDP) in Darlington County, South Carolina, United States. It was first listed as a CDP prior to the 2020 census with a population of 807.

The CDP is in northwestern Darlington County, along South Carolina Highway 151, which leads southeast 6 miles (10 km) to Hartsville and northwest 7 miles (11 km) to McBee. A portion of the eastern border of the CDP follows Black Creek, a southeast-flowing tributary of the Great Pee Dee River, and the south border of the CDP follows Beaverdam Creek, an east-flowing tributary of Black Creek. The H. B. Robinson Nuclear Generating Station is just outside the northeast border of the CDP, adjacent to Lake Robinson, a reservoir built on Black Creek.

Historical population

Census	Pop.	Note	%±
2020	453		—
U.S. Decennial Census 2020

Pine Ridge CDP, South Carolina – Demographic Profile
(NH = Non-Hispanic)

Race / Ethnicity	Pop 2020	% 2020
White alone (NH)	643	79.68%
Black or African American alone (NH)	73	9.05%
Native American or Alaska Native alone (NH)	5	0.62%
Asian alone (NH)	9	1.12%
Pacific Islander alone (NH)	0	0.00%
Some Other Race alone (NH)	5	0.62%
Mixed Race/Multi-Racial (NH)	20	2.48%
Hispanic or Latino (any race)	52	6.44%
Total	807	100.00%

Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.