| Official Name: | Rains |
| Settlement Type: | unincorporated community |
| Pushpin Map: | South Carolina |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of South Carolina |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name: | United States |
| Subdivision Name1: | South Carolina |
| Subdivision Name2: | Marion County |
| Area Total Sq Mi: | 1.34 |
| Area Total Km2: | 3.46 |
| Area Land Sq Mi: | 1.34 |
| Area Land Km2: | 3.46 |
| Area Water Sq Mi: | 0.00 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 242 |
| Population Density Km2: | 69.96 |
| Population Density Sq Mi: | 181.14 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 34.0978°N -79.3156°W |
| Elevation M: | 27 |
| Elevation Ft: | 89 |
| Postal Code Type: | ZIP code |
| Postal Code: | 29589 |
| Area Code: | 843, 854 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1225742[1] |
| Unit Pref: | Imperial |
| Area Footnotes: | [2] |
Rains is an unincorporated community in Marion County, South Carolina, United States.[1] Located along US 501, 7.5miles southeast of Marion. Along the CSX Seaboard Air Line, the area is a predominantly farming community and quarry station.
The 2020 census listed a population of 242.[3]
Rains was first listed as a census designated place in the 2020 U.S. Census.
| White alone (NH) | 60 | 24.79% | |
| Black or African American alone (NH) | 175 | 72.31% | |
| Native American or Alaska Native alone (NH) | 0 | 0.00% | |
| Asian alone (NH) | 0 | 0.00% | |
| Pacific Islander alone (NH) | 0 | 0.00% | |
| Some Other Race alone (NH) | 0 | 0.00% | |
| Mixed Race or Multi-Racial (NH) | 6 | 2.48% | |
| Hispanic or Latino (any race) | 1 | 0.41% | |
| Total | 242 | 100.00% |