| Official Name: | Olympia, South Carolina |
| Settlement Type: | Census-designated place |
| Pushpin Map: | South Carolina#USA |
| Pushpin Label: | Olympia |
| Coordinates: | 33.9769°N -81.0319°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Carolina |
| Subdivision Type2: | County |
| Subdivision Name2: | Richland |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.76 |
| Area Land Sq Mi: | 0.72 |
| Area Water Sq Mi: | 0.04 |
| Area Total Km2: | 1.96 |
| Area Land Km2: | 1.85 |
| Area Water Km2: | 0.10 |
| Population As Of: | 2020 |
| Population Density Km2: | 586.40 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Footnotes: | [2] |
| Elevation Ft: | 180 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 29201 (Columbia) |
| Area Code: | 803/839 |
| Blank Name: | FIPS code |
| Blank Info: | 45-52900 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2812988 |
| Population Total: | 1087 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 1518.16 |
Olympia is an urban unincorporated area and census-designated place (CDP) in Richland County, South Carolina, United States. It was first listed as a CDP prior to the 2020 census with a population of 1,087.[3]
The CDP is in western Richland County, bordered to the north by the city of Columbia, the state capital, and to the west, across the Congaree River, by the city of Cayce. The eastern half of the CDP is residential, while the western half is occupied by the Columbia Quarry of Vulcan Materials.[4]
Four locations in the CDP are listed on the National Register of Historic Places. The Olympia Armory is on Granby Lane in the northeast part of the CDP, the Olympia Mill School is on Olympia Avenue in the northern part of the CDP, and the Olympia Union Hall is on Silver Street in the northernmost part of the CDP, close to the Columbia city line. Much of the northeast part of the CDP is within the Olympia Mill Village Historic District.
The Olympia Mill is within the Columbia city limits, just north of the CDP.
| White alone (NH) | 846 | 77.83% | |
| Black or African American alone (NH) | 103 | 9.48% | |
| Native American or Alaska Native alone (NH) | 7 | 0.64% | |
| Asian alone (NH) | 6 | 0.55% | |
| Pacific Islander alone (NH) | 0 | 0.00% | |
| Some Other Race alone (NH) | 5 | 0.46% | |
| Mixed Race or Multi-Racial (NH) | 46 | 4.23% | |
| Hispanic or Latino (any race) | 74 | 6.81% | |
| Total | 1,087 | 100.00% |