Grand Detour, IL demographics:
population, income, and more

Total population
297
5.3% year-over-year change
Median household income
$76,406/yr
3.0% year-over-year change
Housing units
223
11.5% year-over-year change

Grand Detour population

How many people live in Grand Detour

Grand Detour is home to 297 residents, according to the most recent Census data. Gender-wise, 63% of Grand Detour locals are male, and 37% are female.

Total population
297
5.3% year-over-year change
Gender ratio
Male
63%
187
Female
37%
110
Value Percent YoY change
Male 187 63% 19.1%
Female 110 37% -12.0%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Grand Detour is 52, with the population distributed as follows: about 3% are children under 15, then 26.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 13.8% of the population, while another 33% fall into the 45 to 64 bracket. Finally, around 23.9% are 65 or older.

Median age
51.6
Age breakdown
Under 15
3%
15 to 24
26.3%
25 to 44
13.8%
45 to 64
33%
Over 65
23.9%
Value Percent YoY change
Under 15 9 3% -40.0%
15 to 24 78 26.3% 14.7%
25 to 44 41 13.8% -16.3%
45 to 64 98 33% 38.0%
Over 65 71 23.9% -10.1%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

There’s also a share of 31.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 297 100% 5.3%
Racial breakdown
White
65.7%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
31.3%
Other
3%
Value Percent
White 195 65.7%
Two or more races 93 31.3%
Other 9 3%

Households in Grand Detour

A peek inside Grand Detour households

Grand Detour has 148 households, with an average of 2 members in each. Of these, 52% are families, while the remaining 48% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
148
7.2% year-over-year change
Average people per household
2
Non-family households
71
Family households
77
Value Percent YoY change
Non-family households 71 48% 22.4%
Family households 77 52% -3.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Grand Detour

The housing landscape of Grand Detour

Grand Detour's housing consists of 223 units, with 100% being detached single-family homes ideal for those wanting space.

Housing units
223
11.5% year-over-year change
Housing types
Value Percent
1 unit, detached 223 100%
Homes built since 2020
0
% year-over-year change

The age of buildings in Grand Detour

In Grand Detour, the median construction year is 1952. About 41.7% of homes were built before the 1940s, with another 6.7% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 93 41.7% 10.7%
Built between 1940 and 1949 15 6.7% 50.0%
Built between 1950 and 1959 19 8.5% 46.1%
Built between 1970 and 1979 78 35% 23.8%
Built between 1980 and 1989 18 8.1% -21.7%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Grand Detour occupancy rates

Out of the 148 occupied housing units in Grand Detour, 90.5% are owner-occupied, while 9.5% are lived in by tenants. Meanwhile, 33.6% of all homes on the local market sit vacant.

Occupied housing units
148
7.2% year-over-year change
Occupancy breakdown
Renter occupied
14
Owner occupied
134
Value Percent YoY
change
Renter occupied 14 9.5% 0.0%
Owner occupied 134 90.5% 8.1%
Unoccupied housing units
33.6%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Grand Detour housing costs

Median housing costs per month
$930/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Grand Detour

Grand Detour education at a glance

About 34.1% of the population in Grand Detour went to high school, while 20% pursued college studies. Another 17.6% earned an associate degree and 20% hold a bachelor’s. Meanwhile, 2.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 15 5.9% N/A
High school diploma 87 34.1% 8.8%
College diploma 51 20% 0.0%
Associate degree 45 17.6% 4.7%
Bachelor's degree 51 20% 0.0%
Graduate degree 6 2.4% -14.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Grand Detour

How much people earn in Grand Detour

The average annual household income in Grand Detour was $88,699 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +0.1% change from the previous year. At the same time, the median income stood at $76,406, reflecting a +3% shift over the same period.

Average household income in Grand Detour
$88,699/year
0.1% year-over-year change
Median household income in Grand Detour
$76,406/year
3.0% year-over-year change

Grand Detour income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $76,250 overall. Overall, 97% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $76,250 2.7%
Above poverty level
288
Below poverty level
9
Value Percent YoY
change
Above poverty level 288 97% 7.1%
Below poverty level 9 3% -30.8%

Employment in Grand Detour

Workforce and job types in Grand Detour

The job market in Grand Detour is powered by 142 working residents, spread across a range of industries and roles. 55.6% of the working population are employed in professional or administrative positions, while 44.4% are in hands-on or service-based jobs.

Workforce demographics

Working population
142
15.4% year-over-year change
White collar
79
Blue collar
63
Value Percent YoY change
White collar 79 55.6% -2.5%
Blue collar 63 44.4% 50.0%
Employer type
Self employees
0%
Private companies
100%
Governmental workers
0%
Not for profit companies
0%
Value Percent YoY change
Private companies 142 100% 15.4%
Unemployment rate
18.9%
-5.7% year-over-year change

Available workforce

The unemployment rate in Grand Detour stands at 18.9%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Grand Detour

How people get around in Grand Detour

Commuting methods vary: 89.4% of residents travel by personal vehicle and 10.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 127 89.4% 3.2%
Walk 15 10.6% N/A
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

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FAQs about Grand Detour demographics 

What is the total population of Grand Detour?

Grand Detour has a total population of 297 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +5.3% compared to a year ago.

What is the gender ratio in Grand Detour?

The gender ratio in Grand Detour is as follows:
  • 63% males (187 residents)
  • 37% females (110 residents)

What is the median age in Grand Detour?

The median age in Grand Detour is 51.6.

What is the age distribution of the population in Grand Detour?

The age distribution in Grand Detour is as follows:
  • Under 15: 3% (9 residents)
  • Ages 15-24: 26.3% (78 residents)
  • Ages 25-44: 13.8% (41 residents)
  • Ages 45-64: 33% (98 residents)
  • Over 65: 23.9% (71 residents)

What is the racial and ethnic makeup of Grand Detour?

The racial and ethnic makeup of Grand Detour is as follows:
  • White: 65.7% (195 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 31.3% (93 residents)
  • Other: 3% (9 residents)

What percentage of the population in Grand Detour are U.S.-born citizens?

U.S.-born citizens represent 100% of the population in Grand Detour.

How many housing units are there in Grand Detour?

There are 223 housing units in Grand Detour, reflecting a +11.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Grand Detour and what is the average household size?

Grand Detour has a total of 148 households, with an average of 2 people in each.

What is the median household income in Grand Detour?

Grand Detour has a median household income of $76,406, representing a +3.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Grand Detour?

The employment rate is 81.1% in Grand Detour, with a workforce of 142 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 55.6% (79 residents)
  • Blue-collar workers: 44.4% (63 residents)

Places of employment:
  • Self-employed: 0% (0 residents)
  • Private companies: 100% (142 residents)
  • Governmental workers: 0% (0 residents)
  • Not-for-profit companies: 0% (0 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025