| Official Name: | Waterloo, South Carolina |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Carolina |
| Subdivision Type2: | County |
| Subdivision Name2: | Laurens |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 4.62 |
| Area Land Km2: | 4.62 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 1.78 |
| Area Land Sq Mi: | 1.78 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 149 |
| Population Density Km2: | 32.27 |
| Population Density Sq Mi: | 83.57 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 614 |
| Coordinates: | 34.3531°N -82.0581°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 29384 |
| Area Code: | 864 |
| Blank Name: | FIPS code |
| Blank Info: | 45-74995[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1231896 |
Waterloo is a town in Laurens County, South Carolina, United States. The population was 166 at the 2010 census.
Waterloo was incorporated as a town in 1885.[3]
Rosemont Plantation was added to the National Register of Historic Places in 1993.
Waterloo is located at 34.3531°N -82.0581°W (34.352968, -82.058068).[4]
According to the United States Census Bureau, the town has a total area of 1.4 square miles (3.7 km2), all land.
As of the census of 2000, there were 203 people, 75 households, and 57 families residing in the town. The population density was 144.2sp=usNaNsp=us. There were 85 housing units at an average density of 60.4sp=usNaNsp=us. The racial makeup of the town was 43.35% White, 56.16% African American and 0.49% Native American. Hispanic or Latino of any race were 1.48% of the population.
There were 75 households, out of which 37.3% had children under the age of 18 living with them, 45.3% were married couples living together, 17.3% had a female householder with no husband present, and 22.7% were non-families. 20.0% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.05.
In the town, the population was spread out, with 28.1% under the age of 18, 10.8% from 18 to 24, 27.1% from 25 to 44, 21.7% from 45 to 64, and 12.3% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 111.5 males. For every 100 females age 18 and over, there were 102.8 males.
The median income for a household in the town was $27,917, and the median income for a family was $36,875. Males had a median income of $24,063 versus $18,750 for females. The per capita income for the town was $14,159. About 5.7% of families and 12.3% of the population were below the poverty line, including 6.4% of those under the age of eighteen and 21.4% of those 65 or over.