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.

Demographics

The racial composition of Andover includes 92.71% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	394	92.71%
Two or more races	31	7.29%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Andover Marital Status

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