Dorchester County's estimated 2025 population is 177,399 with a growth rate of 2.18% in the past year according to the most recent United States census data. Dorchester County is the 12th largest county in South Carolina. The 2010 population was 137,005 and has seen a growth of 29.48% since that time.
Data after 2023 is projected based on recent change
The racial composition of Dorchester County includes 63.08% White, 25.11% Black or African American, and smaller percentages for other race, Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
White
Black or African American
Two or more races
Other race
Asian
Native Hawaiian or Pacific Islander
Native American
Race | Population | Percentage (of total) |
|---|---|---|
| White | 103,658 | 63.08% |
| Black or African American | 41,255 | 25.11% |
| Two or more races | 9,493 | 5.78% |
| Other race | 4,873 | 2.97% |
| Asian | 3,581 | 2.18% |
| Native Hawaiian or Pacific Islander | 950 | 0.58% |
| Native American | 512 | 0.31% |
Married
Widowed
Divorced
Separated
Never Married
Dorchester County's average per capita income is $49,192. Household income levels show a median of $76,896. The poverty rate stands at 11.52%.
Name | Median | Mean |
|---|---|---|
| Married Families | $110,672 | $128,136 |
| Families | $93,301 | $110,274 |
| Households | $76,896 | $96,656 |
| Non Families | $48,029 | $59,512 |
Average Income
Median Household Income
Poverty Rate