Marion township Flag

Marion township

County Seat:
No
Area (mi²):
44.858
State:
Illinois

Marion township is located in Williamson County, Illinois. Marion township has a 2026 population of 3,818. Marion township is currently declining at a rate of -0.52% annually and its population has decreased by -2.2% since the most recent census, which recorded a population of 3,904 in 2020.

The median household income in Marion township is $104,924 with a poverty rate of 5.2%. The median age in Marion township is 46.3 years: 42.5 years for males, and 49.4 years for females. For every 100 females there are 95.2 males.

3.8K
Total Population
85
Density (mi²)
-20 -0.52%
Growth

Marion township Population

Marion township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263,818-20-0.52%
20253,838-20-0.52%
20243,858-20-0.52%
20233,878-4-0.1%
20223,882-5-0.13%
20213,887-17-0.44%
20203,904-7-0.18%
20193,923-10-0.25%
20183,933-8-0.2%
20173,941-14-0.35%
20163,955-27-0.68%
20153,982-31-0.77%
20144,013-23-0.57%
20134,036-38-0.93%
20124,074-22-0.54%
20114,096-39-0.94%
20104,129-6-0.15%

Median Age

Overall: 46.3 years
Female: 49.4 years
Male: 42.5 years

Marion township Adults

There are 3,134 adults, (864 of whom are seniors) in Marion township.

Sex Ratio

Female: 1,990 (51.2%)
Male: 1,894 (48.8%)

Demographics

The racial composition of Marion township includes 96.04% White, and smaller percentages for Black or African American, Two or more races, other race, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3,73096.04%
Black or African American691.78%
Two or more races601.54%
Other race180.46%
Asian70.18%
Race
Population ↓
Percentage (of total)
White230.59%
Other race180.46%
Two or more races130.33%
Race
Population ↓
Percentage (of total)
White3,70795.44%
Black or African American691.78%
Two or more races471.21%
Asian70.18%

Marion township Marital Status

Economics and Income Statistics

Marion township 's average per capita income is $55,766. Household income levels show a median of $104,924. The poverty rate stands at 5.2%.

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$120,750-
Families$114,327$136,747
Households$104,924$128,561
Non Families$91,250$87,213

$55,766

Average Income

$104,924

Median Household Income

5.2%

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)