Simpson County's 2026 population is estimated at 25,485, reflecting a -0.22% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Simpson County is the 35th largest county in Mississippi. The 2010 population was 27,527 and has grown -7.42% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.6 years
Female: 42 years
Male: 38.7 years
There are 19,745 adults, (4,917 of whom are seniors) in Simpson County.
Female: 13,276 (51.7%)
Male: 12,415 (48.3%)
The racial composition of Simpson County includes 61.11% White, 35.55% Black or African American, and smaller percentages for Two or more races, other race, Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 15,701 | 61.11% |
| Black or African American | 9,134 | 35.55% |
| Two or more races | 581 | 2.26% |
| Other race | 136 | 0.53% |
| Asian | 49 | 0.19% |
| Native Hawaiian or Pacific Islander | 49 | 0.19% |
| Native American | 41 | 0.16% |
Simpson County 's average per capita income is $40,142. Household income levels show a median of $56,381. The poverty rate stands at 20.04%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $83,024 | - |
| Families | $68,311 | $84,666 |
| Households | $56,381 | $74,917 |
| Non Families | $32,140 | $43,822 |
Average Income
Median Household Income
Poverty Rate