Leef township Flag

Leef township

County:
Madison County
County Seat:
No
Area (mi²):
29.239
State:
Illinois

Leef township is located in Madison County, Illinois. Leef township has a 2026 population of 607. Leef township is currently declining at a rate of 0% annually and its population has decreased by -0.65% since the most recent census, which recorded a population of 611 in 2020.

The median household income in Leef township is $114,306 with a poverty rate of 3.9%. The median age in Leef township is 36.5 years: 39.1 years for males, and 34.6 years for females. For every 100 females there are 101.3 males.

607
Total Population
21
Density (mi²)

Leef township Population

Leef township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202660700%
202560700%
202460700%
2023607-2-0.33%
2022609-2-0.33%
202161100%
2020611-1-0.16%
2019616-1-0.16%
2018617-2-0.32%
201761910.16%
201661800%
2015618-1-0.16%
2014619-1-0.16%
2013620-4-0.64%
201262400%
2011624-4-0.64%
201062800%

Median Age

Overall: 36.5 years
Female: 34.6 years
Male: 39.1 years

Leef township Adults

There are 475 adults, (73 of whom are seniors) in Leef township.

Sex Ratio

Female: 306 (49.7%)
Male: 310 (50.3%)

Demographics

The racial composition of Leef township includes 83.12% White, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White51283.12%
Two or more races9916.07%
Asian50.81%
Race
Population ↓
Percentage (of total)
Asian20.32%
Race
Population ↓
Percentage (of total)
White51283.12%
Two or more races9916.07%
Asian30.49%

Leef township Marital Status

Economics and Income Statistics

Leef township 's average per capita income is $59,063. Household income levels show a median of $114,306. The poverty rate stands at 3.9%.

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$121,853-
Families$121,595$125,878
Households$114,306$109,502
Non Families-$47,606

$59,063

Average Income

$114,306

Median Household Income

3.9%

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)