Sangamon County's estimated 2026 population is 194,603 with a growth rate of 0.07% in the past year according to the most recent United States census data. Sangamon County is the 11th largest county in Illinois. The 2010 population was 197,769 and has seen a growth of -1.6% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sangamon County includes 79.12% White, 12.65% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (79.12%)
Black or African American (12.65%)
Two or more races (5.14%)
Asian (2.12%)
Other race (0.87%)
Native American (0.07%)
Native Hawaiian or Pacific Islander (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 154,464 | 79.12% |
| Black or African American | 24,703 | 12.65% |
| Two or more races | 10,042 | 5.14% |
| Asian | 4,134 | 2.12% |
| Other race | 1,699 | 0.87% |
| Native American | 143 | 0.07% |
| Native Hawaiian or Pacific Islander | 32 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Sangamon County's average per capita income is $52,983. Household income levels show a median of $74,114. The poverty rate stands at 12.9%.
Name | Median | Mean |
|---|---|---|
| Married Families | $121,108 | $145,238 |
| Families | $101,807 | $123,456 |
| Households | $74,114 | $97,695 |
| Non Families | $45,366 | $59,496 |
Average Income
Median Household Income
Poverty Rate