Andover township Flag

Andover township

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

Andover township is located in Henry County, Illinois. Andover township has a 2026 population of 860. Andover township is currently declining at a rate of -0.35% annually and its population has decreased by -3.15% since the most recent census, which recorded a population of 888 in 2020.

The median household income in Andover township is $67,917 with a poverty rate of 10.73%. The median age in Andover township is 53.5 years: 49.1 years for males, and 56.4 years for females. For every 100 females there are 106.8 males.

860
Total Population
24
Density (mi²)
-3 -0.35%
Growth

Andover township Population

Andover township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026860-3-0.35%
2025863-3-0.35%
2024866-3-0.35%
2023869-5-0.57%
2022874-8-0.91%
2021882-6-0.68%
2020888-2-0.22%
2019936-3-0.32%
201893900%
2017939-5-0.53%
201694400%
2015944-4-0.42%
2014948-1-0.11%
2013949-3-0.32%
201295210.11%
2011951-3-0.31%
201095400%

Median Age

Overall: 53.5 years
Female: 56.4 years
Male: 49.1 years

Andover township Adults

There are 516 adults, (142 of whom are seniors) in Andover township.

Sex Ratio

Female: 293 (48.3%)
Male: 313 (51.7%)

Demographics

The racial composition of Andover township includes 89.11% White, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White54089.11%
Two or more races6310.4%
Asian30.5%
Race
Population ↓
Percentage (of total)
White121.98%
Race
Population ↓
Percentage (of total)
White52887.13%
Two or more races6310.4%
Asian30.5%

Andover township Marital Status

Economics and Income Statistics

Andover township 's average per capita income is $39,000. Household income levels show a median of $67,917. The poverty rate stands at 10.73%.

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$91,136-
Families$90,000$95,426
Households$67,917$78,784
Non Families$35,536$41,093

$39,000

Average Income

$67,917

Median Household Income

10.73%

Poverty Rate

Nearby Cities

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)