Alton township Flag

Alton township

County:
Madison County
County Seat:
No
Area (mi²):
15.671
State:
Illinois

Alton township is located in Madison County, Illinois. Alton township has a 2025 population of 24,640. Alton township is currently declining at a rate of -0.74% annually and its population has decreased by -3.78% since the most recent census, which recorded a population of 25,608 in 2020.

The average household income in Alton township is $66,863 with a poverty rate of 24.47%.The median age in Alton township is 38.4 years: 37.6 years for males, and 40.1 years for females.

24.6K
Total Population
1,572
Density (mi²)
-183 -0.74%
Growth

Alton township 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)