Sussex County's estimated 2025 population is 277,633 with a growth rate of 2.61% in the past year according to the most recent United States census data. Sussex County is the 2nd largest county in Delaware. The 2010 population was 197,883 and has seen a growth of 40.3% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sussex County includes 75.58% White, 10.46% Black or African American, 4.35% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 187,296 | 75.58% |
| Black or African American | 25,916 | 10.46% |
| Two or more races | 18,934 | 7.64% |
| Other race | 10,768 | 4.35% |
| Asian | 3,055 | 1.23% |
| Native American | 1,781 | 0.72% |
| Native Hawaiian or Pacific Islander | 49 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Sussex County's average per capita income is $45,171. Household income levels show a median of $78,162. The poverty rate stands at 11.5%.
Name | Median | Mean |
|---|---|---|
| Married Families | $106,889 | $135,427 |
| Families | $95,047 | $122,801 |
| Households | $78,162 | $105,000 |
| Non Families | $44,536 | $62,382 |
Average Income
Median Household Income
Poverty Rate