Dorchester County's estimated 2026 population is 181,955 with a growth rate of 1.99% 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 32.81% since that time.
Data after 2023 is projected based on recent change
Overall: 38 years
Female: 38.8 years
Male: 37.1 years
There are 126,948 adults, (25,407 of whom are seniors) in Dorchester County.
Female: 85,603 (51.2%)
Male: 81,598 (48.8%)
The racial composition of Dorchester County includes 61.93% White, 25.22% Black or African American, 3.07% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 103,549 | 61.93% |
| Black or African American | 42,160 | 25.22% |
| Two or more races | 12,298 | 7.36% |
| Other race | 5,135 | 3.07% |
| Asian | 3,531 | 2.11% |
| Native American | 429 | 0.26% |
| Native Hawaiian or Pacific Islander | 99 | 0.06% |
Dorchester County's average per capita income is $50,722. Household income levels show a median of $78,198. The poverty rate stands at 11.38%.
Name | Median | Mean |
|---|---|---|
| Married Families | $113,358 | $132,535 |
| Families | $92,757 | $113,660 |
| Households | $78,198 | $100,220 |
| Non Families | $49,906 | $63,532 |
Average Income
Median Household Income
Poverty Rate