Lenzburg township Flag

Lenzburg township

County Seat:
No
Area (mi²):
28.907
State:
Illinois

Lenzburg township is located in St. Clair County, Illinois. Lenzburg township has a 2026 population of 898. Lenzburg township is currently declining at a rate of -0.66% annually and its population has decreased by -5.17% since the most recent census, which recorded a population of 947 in 2020.

The median household income in Lenzburg township is $52,917 with a poverty rate of 13.89%. The median age in Lenzburg township is 37.8 years: 28.2 years for males, and 53.7 years for females. For every 100 females there are 77.3 males.

898
Total Population
31
Density (mi²)
-6 -0.66%
Growth

Lenzburg township Population

Lenzburg township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026898-6-0.66%
2025904-6-0.66%
2024910-6-0.66%
2023916-10-1.08%
2022926-12-1.28%
2021938-9-0.95%
2020947-2-0.21%
2019989-8-0.8%
2018997-4-0.4%
20171,001-4-0.4%
20161,005-2-0.2%
20151,007-8-0.79%
20141,015-7-0.68%
20131,022-9-0.87%
20121,031-8-0.77%
20111,039-8-0.76%
20101,04700%

Median Age

Overall: 37.8 years
Female: 53.7 years
Male: 28.2 years

Lenzburg township Adults

There are 705 adults, (178 of whom are seniors) in Lenzburg township.

Sex Ratio

Female: 532 (56.4%)
Male: 411 (43.6%)

Demographics

The racial composition of Lenzburg township includes 96.61% White, and smaller percentages for Black or African American, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White91196.61%
Two or more races303.18%
Black or African American10.11%
Native American10.11%
Race
Population ↓
Percentage (of total)
Two or more races131.38%
Race
Population ↓
Percentage (of total)
White91196.61%
Two or more races171.8%
Black or African American10.11%
Native American10.11%

Lenzburg township Marital Status

Economics and Income Statistics

Lenzburg township 's average per capita income is $41,250. Household income levels show a median of $52,917. The poverty rate stands at 13.89%.

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$80,625-
Families$77,083$77,128
Households$52,917$59,704
Non Families$32,746$35,170

$41,250

Average Income

$52,917

Median Household Income

13.89%

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)