Jefferson township Flag

Jefferson township

County Seat:
No
Area (mi²):
18.163
State:
Illinois

Jefferson township is located in Stephenson County, Illinois. Jefferson township has a 2026 population of 239. Jefferson township is currently declining at a rate of -0.42% annually and its population has decreased by -3.63% since the most recent census, which recorded a population of 248 in 2020.

The median household income in Jefferson township is $76,250 with a poverty rate of 5.73%. The median age in Jefferson township is 47.1 years: 47.2 years for males, and 40.8 years for females. For every 100 females there are 130.9 males.

239
Total Population
13
Density (mi²)
-1 -0.42%
Growth

Jefferson township Population

Jefferson township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026239-1-0.42%
2025240-1-0.41%
2024241-1-0.41%
2023242-2-0.82%
2022244-2-0.81%
2021246-2-0.81%
2020248-1-0.4%
2019251-2-0.79%
2018253-1-0.39%
2017254-3-1.17%
2016257-1-0.39%
2015258-3-1.15%
2014261-2-0.76%
2013263-1-0.38%
2012264-2-0.75%
2011266-2-0.75%
201026800%

Median Age

Overall: 47.1 years
Female: 40.8 years
Male: 47.2 years

Jefferson township Adults

There are 124 adults, (22 of whom are seniors) in Jefferson township.

Sex Ratio

Female: 68 (43.3%)
Male: 89 (56.7%)

Demographics

The racial composition of Jefferson township includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White157100%
Race
Population ↓
Percentage (of total)
White157100%

Jefferson township Marital Status

Economics and Income Statistics

Jefferson township 's average per capita income is $32,250. Household income levels show a median of $76,250. The poverty rate stands at 5.73%.

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
Households$76,250$78,473
Married Families$76,250-
Families$69,500$69,846
Non Families--

$32,250

Average Income

$76,250

Median Household Income

5.73%

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)