City in Macoupin County, Illinois · 1.5 sq mi · 2,065 people per sq mi
About 3,100 people live in Gillespie. The typical household earns $82,772, and the median resident is 45.3 years old.
2026 projection
From 3,166 in 2020
Poverty rate 17.09%
Men 42.1 · Women 47.7
1880–2026
3,066
2026 projection
3.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
3,066
2026 projection
3.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 3,066 | -17 | 0.55% |
|---|---|---|---|
| 2025 | 3,083 | -18 | 0.58% |
| 2024 | 3,101 | -20 | 0.64% |
| 2023 | 3,121 | -15 | 0.48% |
| 2022 | 3,136 | -33 | 1.04% |
| 2021 | 3,169 | +3 | 0.09% |
| 2020 | 3,166 | +69 | 2.23% |
| 2019 | 3,097 | -26 | 0.83% |
| 2018 | 3,123 | -24 | 0.76% |
| 2017 | 3,147 | -21 | 0.66% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 28 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 6 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 49% | 50% |
| Never married | 28% | 34% | 22% |
| Divorced | 17% | 17% | 17% |
| Widowed | 5% | 0% | 11% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau