Sangamon County's 2026 population is estimated at 194,603, reflecting a 0.07% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Sangamon County is the 11th largest county in Illinois. The 2010 population was 197,769 and has grown -1.6% since 2010.
Data after 2023 is projected based on recent change
Overall: 41 years
Female: 42.2 years
Male: 40 years
There are 152,307 adults, (37,849 of whom are seniors) in Sangamon County.
Female: 100,848 (51.7%)
Male: 94,099 (48.3%)
The racial composition of Sangamon County includes 78.15% White, 12.7% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 152,344 | 78.15% |
| Black or African American | 24,767 | 12.7% |
| Two or more races | 11,104 | 5.7% |
| Asian | 4,464 | 2.29% |
| Other race | 2,089 | 1.07% |
| Native American | 135 | 0.07% |
| Native Hawaiian or Pacific Islander | 44 | 0.02% |
Sangamon County 's average per capita income is $54,994. Household income levels show a median of $75,357. The poverty rate stands at 13.11%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $124,315 | $150,808 |
| Families | $103,722 | $127,894 |
| Households | $75,357 | $100,226 |
| Non Families | $45,907 | $60,190 |
Average Income
Median Household Income
Poverty Rate