Richland County's 2026 population is estimated at 439,112, reflecting a 0.96% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Richland County is the 4th largest county in South Carolina. The 2010 population was 385,754 and has grown 13.83% since 2010.
Overall: 34.4 years
Female: 35.9 years
Male: 32.6 years
There are 331,148 adults, (59,468 of whom are seniors) in Richland County.
Female: 219,359 (52%)
Male: 202,758 (48%)
The racial composition of Richland County includes 47.45% Black or African American, 40.38% White, 3% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Black or African American | 200,284 | 47.45% |
| White | 170,439 | 40.38% |
| Two or more races | 25,339 | 6% |
| Asian | 12,651 | 3% |
| Other race | 12,185 | 2.89% |
| Native American | 885 | 0.21% |
| Native Hawaiian or Pacific Islander | 334 | 0.08% |
Richland County 's average per capita income is $47,595. Household income levels show a median of $63,784. The poverty rate stands at 17.2%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $117,591 | $146,976 |
| Families | $85,717 | $115,209 |
| Households | $63,784 | $90,966 |
| Non Families | $42,864 | $54,954 |
Average Income
Median Household Income
Poverty Rate