Lenzburg Flag

Lenzburg

County Seat:
No
Area (mi²):
1.155
State:
Illinois

Lenzburg is a village located in St. Clair County, Illinois. Lenzburg has a 2026 population of 439. Lenzburg is currently declining at a rate of -0.9% annually and its population has decreased by -5.59% since the most recent census, which recorded a population of 465 in 2020.

The median household income in Lenzburg is $42,656 with a poverty rate of 21.62%. The median age in Lenzburg is 32 years: 31.7 years for males, and 34.5 years for females. For every 100 females there are 83.7 males.

439
Total Population
380
Density (mi²)
-4 -0.9%
Growth

Lenzburg Population

Lenzburg Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026439-4-0.9%
2025443-5-1.12%
2024448-3-0.67%
2023451-5-1.1%
2022456-6-1.3%
2021462-3-0.65%
2020465-1-0.21%
2019484-5-1.02%
2018489-2-0.41%
2017491-3-0.61%
2016494-1-0.2%
2015495-5-1%
2014500-2-0.4%
2013502-6-1.18%
2012508-3-0.59%
2011511-10-1.92%
201051600%

Median Age

Overall: 32 years
Female: 34.5 years
Male: 31.7 years

Lenzburg Adults

There are 292 adults, (48 of whom are seniors) in Lenzburg.

Sex Ratio

Female: 233 (54.4%)
Male: 195 (45.6%)

Demographics

The racial composition of Lenzburg includes 92.52% White, and smaller percentages for Black or African American, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White39692.52%
Two or more races307.01%
Black or African American10.23%
Native American10.23%
Race
Population ↓
Percentage (of total)
Two or more races133.04%
Race
Population ↓
Percentage (of total)
White39692.52%
Two or more races173.97%
Black or African American10.23%
Native American10.23%

Lenzburg Marital Status

Economics and Income Statistics

Lenzburg 's average per capita income is $41,500. Household income levels show a median of $42,656. The poverty rate stands at 21.62%.

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$82,750-
Families$65,625$74,009
Households$42,656$62,898
Non Families$32,857$45,688

$41,500

Average Income

$42,656

Median Household Income

21.62%

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)