Illinois Gazetteer
Also See Gillespie, IL: ZIP Codes & Maps
The City of Gillespie had a population of 3,156 as of July 1, 2024. Gillespie ranks in the upper quartile for Population Density and the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.
The primary coordinate point for Gillespie is located at latitude 39.1298 and longitude -89.8195 in Macoupin County. The formal boundaries for the City of Gillespie encompass a land area of 1.49 sq. miles and a water area of 0 sq. miles. Macoupin County is in the Central time zone (GMT -6).
The City of Gillespie has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.
The City of Gillespie is located within Township of Gillespie, a minor civil division (MCD) of Macoupin County.
POPULATION | |
|---|---|
| Total Population | 3,156 (100%) |
| Population in Households | 3,156 (100.0%) |
| Population in Families | 2,438 (77.2%) |
| Population in Group Quarters1 | 0 |
| Population Density | 2,126 |
| Diversity Index2 | 14 |
INCOME | |
| Median Household Income | $57,542 |
| Average Household Income | $78,683 |
| % of Income for Mortgage4 | 11% |
| Per Capita Income | $33,158 |
| Wealth Index5 | 64 |
| Socioeconomic Status Index6 | Moderate (47.3) |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 1,541 (100%) |
| Owner Occupied HU | 968 (62.8%) |
| Renter Occupied HU | 362 (23.5%) |
| Vacant Housing Units | 211 (13.7%) |
| Median Home Value | $102,500 |
| Average Home Value | $124,354 |
| Housing Affordability Index3 | 204 |
HOUSEHOLDS | |
| Total Households | 1,330 |
| Average Household Size | 2.37 |
| Family Households | 846 |
| Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2024 | 2024-2029 |
|---|---|---|
| Population | -0.09% | -0.36% |
| Households | -0.19% | -0.06% |
| Families | -0.43% | |
| Median Household Income | 4.24% | |
| Per Capita Income | 3.55% | |
| Owner Occupied HU | 0.47% |
The table below compares Gillespie to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile |
|---|---|---|
| Total Population | # 418 | 71st |
| Population Density | # 216 | 85th |
| Median Household Income | # 1123 | 23rd |
| Housing Affordability Index | # 1279 | 87th |
| Per Capita Income | # 1066 | 27th |
| Diversity Index | # 1139 | 22nd |
Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.
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