Grand Detour Flag

Grand Detour

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

Grand Detour is located in Ogle County, Illinois. Grand Detour has a 2025 population of 647. Grand Detour is currently declining at a rate of -0.31% annually and its population has decreased by -1.37% since the most recent census, which recorded a population of 656 in 2020.

The average household income in Grand Detour is $91,992 with a poverty rate of 3.03%.The median age in Grand Detour is 43.7 years: 47.3 years for males, and 42.5 years for females.

647
Total Population
59
Density (mi²)
-2 -0.31%
Growth

Grand Detour Population

Grand Detour Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Grand Detour includes 78.79% White, 3.03% other race, and smaller percentages for and multiracial populations.

Population by Race

White (78.8%)

Two or more races (18.2%)

Other race (3.0%)

Race
Population
Percentage (of total)
White33878.79%
Two or more races7818.18%
Other race133.03%

Grand Detour Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Grand Detour's average per capita income is $60,742. Household income levels show a median of $74,554. The poverty rate stands at 3.03%.

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$134,231-
Families$127,206$128,824
Households$74,554$91,992
Non Families$48,162$50,012

$60,742

Average Income

$74,554

Median Household Income

3.03%

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)