Gillespie is a city located in Macoupin County, Illinois. Gillespie has a 2025 population of 3,068 . Gillespie is currently declining at a rate of -0.62% annually and its population has decreased by -3% since the most recent census, which recorded a population of 3,163 in 2020.
The average household income in Gillespie is $85,663 with a poverty rate of 16.97%. The median age in Gillespie is 44.7 years: 42.4 years for males, and 45 years for females. For every 100 females there are 111.4 males.
Data after 2023 is projected based on recent change
The racial composition of Gillespie includes 93.2% White, and smaller percentages for other race and multiracial populations.
White (93.2%)
Two or more races (6.48%)
Other race (0.32%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,906 | 93.2% |
| Two or more races | 202 | 6.48% |
| Other race | 10 | 0.32% |
Married
Widowed
Divorced
Separated
Never Married
Gillespie's average per capita income is $53,277. Household income levels show a median of $76,806. The poverty rate stands at 16.97%.
Name | Median | Mean |
|---|---|---|
| Married Families | $100,000 | - |
| Families | $77,336 | $90,935 |
| Households | $76,806 | $85,663 |
| Non Families | $41,989 | $61,208 |
Average Income
Median Household Income
Poverty Rate