Andover Flag

Andover

County:
Henry County
County Seat:
No
Area (mi²):
36.564
State:
Illinois

Andover is located in Henry County, Illinois. Andover has a 2025 population of 858. Andover is currently declining at a rate of -0.58% annually and its population has decreased by -3.16% since the most recent census, which recorded a population of 886 in 2020.

The average household income in Andover is $76,000 with a poverty rate of 11.27%.The median age in Andover is 56.4 years: 49.6 years for males, and 58 years for females.

858
Total Population
23
Density (mi²)
-5 -0.58%
Growth

Andover 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)