Grand Detour township Flag

Grand Detour township

County:
Ogle County
County Seat:
No
Area (mi²):
10.994
State:
Illinois

Grand Detour township is located in Ogle County, Illinois. Grand Detour township has a 2026 population of 643. Grand Detour township is currently declining at a rate of -0.46% annually and its population has decreased by -1.98% since the most recent census, which recorded a population of 656 in 2020.

The median household income in Grand Detour township is $75,547 with a poverty rate of 2.15%. The median age in Grand Detour township is 54 years: 54.5 years for males, and 43.8 years for females. For every 100 females there are 160.2 males.

643
Total Population
58
Density (mi²)
-3 -0.46%
Growth

Grand Detour township Population

Grand Detour township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026643-3-0.46%
2025646-3-0.46%
2024649-3-0.46%
2023652-1-0.15%
202265300%
2021653-3-0.46%
2020656-1-0.15%
2019657-4-0.61%
2018661-2-0.3%
2017663-2-0.3%
2016665-5-0.75%
2015670-5-0.74%
2014675-4-0.59%
2013679-5-0.73%
2012684-3-0.44%
2011687-11-1.58%
2010694-1-0.14%

Median Age

Overall: 54 years
Female: 43.8 years
Male: 54.5 years

Grand Detour township Adults

There are 350 adults, (109 of whom are seniors) in Grand Detour township.

Sex Ratio

Female: 161 (38.4%)
Male: 258 (61.6%)

Demographics

The racial composition of Grand Detour township includes 75.66% White, and smaller percentages for other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White31775.66%
Two or more races9322.2%
Other race92.15%
Race
Population ↓
Percentage (of total)
Two or more races9322.2%
Other race92.15%
Race
Population ↓
Percentage (of total)
White31775.66%

Grand Detour township Marital Status

Economics and Income Statistics

Grand Detour township 's average per capita income is $49,250. Household income levels show a median of $75,547. The poverty rate stands at 2.15%.

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$135,667-
Families$128,750$122,960
Households$75,547$79,374
Non Families$45,000$51,354

$49,250

Average Income

$75,547

Median Household Income

2.15%

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)