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 2026 population of 514. Alto township is currently declining at a rate of -0.39% annually and its population has decreased by -2.47% since the most recent census, which recorded a population of 527 in 2020.

The median household income in Alto township is $127,833 with a poverty rate of 4.61%. The median age in Alto township is 42.9 years: 42.4 years for males, and 50.2 years for females. For every 100 females there are 144.2 males.

514
Total Population
15
Density (mi²)
-2 -0.39%
Growth

Alto township Population

Alto township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026514-2-0.39%
2025516-2-0.39%
2024518-2-0.38%
2023520-5-0.95%
2022525-4-0.76%
202152920.38%
2020527-2-0.38%
2019531-2-0.38%
2018533-4-0.74%
201753700%
2016537-2-0.37%
2015539-4-0.74%
2014543-2-0.37%
2013545-4-0.73%
2012549-10-1.79%
2011559-6-1.06%
2010564-1-0.18%

Median Age

Overall: 42.9 years
Female: 50.2 years
Male: 42.4 years

Alto township Adults

There are 501 adults, (63 of whom are seniors) in Alto township.

Sex Ratio

Female: 249 (41%)
Male: 359 (59%)

Demographics

The racial composition of Alto township includes 91.28% 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)
White55591.28%
Two or more races193.13%
Other race142.3%
Native American121.97%
Black or African American60.99%
Asian20.33%
Race
Population ↓
Percentage (of total)
Two or more races162.63%
Other race142.3%
Native American121.97%
White50.82%
Race
Population ↓
Percentage (of total)
White55090.46%
Black or African American60.99%
Two or more races30.49%
Asian20.33%

Alto township Marital Status

Economics and Income Statistics

Alto township 's average per capita income is $62,614. Household income levels show a median of $127,833. The poverty rate stands at 4.61%.

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$132,727-
Families$129,667$125,310
Households$127,833$132,948
Non Families-$176,264

$62,614

Average Income

$127,833

Median Household Income

4.61%

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)