Erienna township Flag

Erienna township

County:
Grundy County
County Seat:
No
Area (mi²):
20.816
State:
Illinois

Erienna township is located in Grundy County, Illinois. Erienna township has a 2026 population of 2,518. Erienna township is currently growing at a rate of 0.52% annually and its population has increased by 3.66% since the most recent census, which recorded a population of 2,429 in 2020.

The median household income in Erienna township is $96,906 with a poverty rate of 3.77%. The median age in Erienna township is 51.5 years: 50.1 years for males, and 57.1 years for females. For every 100 females there are 77.9 males.

2.5K
Total Population
121
Density (mi²)
13 0.52%
Growth

Erienna township Population

Erienna township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,518130.52%
20252,505130.52%
20242,492130.52%
20232,479200.81%
20222,45970.29%
20212,452230.95%
20202,42930.12%
20192,511150.6%
20182,496371.5%
20172,459341.4%
20162,425160.66%
20152,409241.01%
20142,385251.06%
20132,360120.51%
20122,348100.43%
20112,3381215.46%
20102,33240.17%

Median Age

Overall: 51.5 years
Female: 57.1 years
Male: 50.1 years

Erienna township Adults

There are 2,013 adults, (851 of whom are seniors) in Erienna township.

Sex Ratio

Female: 1,476 (56.2%)
Male: 1,150 (43.8%)

Demographics

The racial composition of Erienna township includes 92.31% White, and smaller percentages for Asian, Black or African American, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,42492.31%
Two or more races1314.99%
Asian511.94%
Black or African American130.5%
Other race70.27%
Race
Population ↓
Percentage (of total)
Two or more races511.94%
White210.8%
Other race70.27%
Race
Population ↓
Percentage (of total)
White2,40391.51%
Two or more races803.05%
Asian511.94%
Black or African American130.5%

Erienna township Marital Status

Economics and Income Statistics

Erienna township 's average per capita income is $77,708. Household income levels show a median of $96,906. The poverty rate stands at 3.77%.

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
Families$117,946$139,233
Married Families$112,917-
Households$96,906$126,232
Non Families$62,440$99,237

$77,708

Average Income

$96,906

Median Household Income

3.77%

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)