Aledo Flag

Aledo

County:
Mercer County
County Seat:
Yes
Area (mi²):
2.344
State:
Illinois

Aledo is a city located in Mercer County, Illinois. Aledo has a 2025 population of 3,536. It is also the county seat of Mercer CountyAledo is currently declining at a rate of -0.45% annually and its population has decreased by -2.27% since the most recent census, which recorded a population of 3,618 in 2020.

The average household income in Aledo is $81,034 with a poverty rate of 10.24%.The median age in Aledo is 40.7 years: 38.6 years for males, and 42.4 years for females.

3.5K
Total Population
1,508
Density (mi²)
-16 -0.45%
Growth

Aledo Population

Demographics

Economics and Income Statistics

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)