Alto township Flag

Alto township

County:
Lee County
County Seat:
No
Area (mi²):
34.905
State:
Illinois

Alto township is located in Lee County, Illinois. Alto township has a 2025 population of 509. Alto township is currently declining at a rate of -0.97% annually and its population has decreased by -3.23% since the most recent census, which recorded a population of 526 in 2020.

The average household income in Alto township is $123,601 with a poverty rate of 2.64%.The median age in Alto township is 42.6 years: 42.2 years for males, and 50.1 years for females.

509
Total Population
15
Density (mi²)
-5 -0.97%
Growth

Alto township Population

Alto township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Alto township includes 92.09% White, and smaller percentages for other race, Native American, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White59492.09%
Two or more races213.26%
Other race121.86%
Native American101.55%
Black or African American60.93%
Asian20.31%

Alto township Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Alto township's average per capita income is $60,286. Household income levels show a median of $121,528. The poverty rate stands at 2.64%.

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$127,292-
Families$126,250$123,146
Households$121,528$123,601
Non Families-$122,406

$60,286

Average Income

$121,528

Median Household Income

2.64%

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)