Gillespie Flag

Gillespie

County:
Macoupin County
County Seat:
No
Area (mi²):
1.484
State:
Illinois

Gillespie is a city located in Macoupin County, Illinois. Gillespie has a 2026 population of 3,087. Gillespie is currently declining at a rate of -0.87% annually and its population has decreased by -2.4% since the most recent census, which recorded a population of 3,163 in 2020.

3.1K
Total Population
2,080
Density (mi²)
-27 -0.87%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)