Andover Flag

Andover

County:
Henry County
County Seat:
No
Area (mi²):
0.99
State:
Illinois

Andover is a village located in Henry County, Illinois. Andover has a 2025 population of 532. Andover is currently declining at a rate of -0.75% annually and its population has decreased by -3.97% since the most recent census, which recorded a population of 554 in 2020.

The average household income in Andover is $75,519 with a poverty rate of 4.71%.The median age in Andover is 45.3 years: 43.4 years for males, and 46.9 years for females.

532
Total Population
537
Density (mi²)
-4 -0.75%
Growth

Andover Population

Andover Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Andover includes 92.71% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White39492.71%
Two or more races317.29%

Andover Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Andover's average per capita income is $55,417. Household income levels show a median of $68,281. The poverty rate stands at 4.71%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$93,250-
Families$87,083$92,590
Households$68,281$75,519
Non Families$24,625$42,067

$55,417

Average Income

$68,281

Median Household Income

4.71%

Poverty Rate

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)