Duncan, Gallatin County, IL demographics:
population, income, and more

Total population
29
-9.4% year-over-year change
Median household income
$50,288/yr
-5.0% year-over-year change
Housing units
15
-11.8% year-over-year change

Duncan population

How many people live in Duncan

Duncan is home to 29 residents, according to the most recent Census data. Gender-wise, 48.3% of Duncan locals are male, and 51.7% are female.

Total population
29
-9.4% year-over-year change
Gender ratio
Male
48.3%
14
Female
51.7%
15
Value Percent YoY change
Male 14 48.3% -12.5%
Female 15 51.7% -6.2%
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 Duncan is 43, with the population distributed as follows: about 21.4% are children under 15, then 3.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 25% of the population, while another 28.6% fall into the 45 to 64 bracket. Finally, around 21.4% are 65 or older.

Median age
42.8
Age breakdown
Under 15
21.4%
15 to 24
3.6%
25 to 44
25%
45 to 64
28.6%
Over 65
21.4%
Value Percent YoY change
Under 15 6 21.4% 0.0%
15 to 24 1 3.6% -50.0%
25 to 44 7 25% 0.0%
45 to 64 8 28.6% -20.0%
Over 65 6 21.4% -14.3%
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

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 29 100% -9.4%
Racial breakdown
White
96.6%
Black or African American
3.4%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
0%
Other
0%
Value Percent
White 28 96.6%
Black or African American 1 3.4%

Households in Duncan

A peek inside Duncan households

Duncan has 13 households, with an average of 2 members in each. Of these, 61.5% are families, while the remaining 38.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
13
-7.1% year-over-year change
Average people per household
2
Non-family households
5
Family households
8
Value Percent YoY change
Non-family households 5 38.5% 0.0%
Family households 8 61.5% -11.1%
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 Duncan

The housing landscape of Duncan

Duncan's housing consists of 15 units, with 57.1% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 28.6% of the housing landscape.

Housing units
15
-11.8% year-over-year change
Housing types
Value Percent
1 unit, detached 8 57.1%
2 units 2 14.3%
Mobile home 4 28.6%
Homes built since 2020
% year-over-year change

The age of buildings in Duncan

In Duncan, the median construction year is 1972. About 6.2% of homes were built before the 1940s, with another 6.2% 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 1 6.2% 0.0%
Built between 1940 and 1949 1 6.2% 0.0%
Built between 1950 and 1959 3 18.8% 50.0%
Built between 1960 and 1969 3 18.8% -25.0%
Built between 1970 and 1979 3 18.8% -25.0%
Built between 1980 and 1989 2 12.5% 0.0%
Built between 1990 and 1999 2 12.5% 100.0%
Built between 2010 and 2019 1 6.2% 0.0%
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.

Duncan occupancy rates

Out of the 13 occupied housing units in Duncan, 61.5% are owner-occupied, while 38.5% are lived in by tenants. Meanwhile, 13.3% of all homes on the local market sit vacant.

Occupied housing units
13
-7.1% year-over-year change
Occupancy breakdown
Renter occupied
5
Owner occupied
8
Value Percent YoY
change
Renter occupied 5 38.5% 25.0%
Owner occupied 8 61.5% -20.0%
Unoccupied housing units
13.3%
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.

Duncan housing costs

Housing costs in Duncan come to a median of $560 per month, while tenants specifically pay a median gross rent of $447.

Median housing costs per month
$560/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.
Median gross rent in Duncan
$447/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Duncan

Duncan education at a glance

About 42.9% of the population in Duncan went to high school, while 23.8% pursued college studies. Another 9.5% earned an associate degree and 9.5% hold a bachelor’s. Meanwhile, 4.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 2 9.5% 0.0%
High school diploma 9 42.9% 0.0%
College diploma 5 23.8% -28.6%
Associate degree 2 9.5% 0.0%
Bachelor's degree 2 9.5% -33.3%
Graduate degree 1 4.8% -50.0%
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 Duncan

How much people earn in Duncan

The average annual household income in Duncan was $66,494 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -17.5% change from the previous year. At the same time, the median income stood at $50,288, reflecting a -5% shift over the same period.

Average household income in Duncan
$66,494/year
-17.5% year-over-year change
Median household income in Duncan
$50,288/year
-5.0% year-over-year change

Duncan income by age

In Duncan, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $80,417. Those with someone between 45 and 64 in charge, often well established professionally, earn $39,821 overall. Overall, 79.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $80,417 20.0%
45 - 64 $39,821 -41.9%
Over 65 $39,643 -13.8%
Above poverty level
23
Below poverty level
6
Value Percent YoY
change
Above poverty level 23 79.3% -11.5%
Below poverty level 6 20.7% -14.3%

Employment in Duncan

Workforce and job types in Duncan

75% of the working population are employed in professional or administrative positions, while 25% are in hands-on or service-based jobs. Also, 16.7% run their own businesses, 58.3% are employed by private companies, and 16.7% work in the public sector.

Workforce demographics

White collar
9
Blue collar
3
Value Percent YoY change
White collar 9 75% -10.0%
Blue collar 3 25% -50.0%
Employer type
Self employees
16.7%
Private companies
58.3%
Governmental workers
16.7%
Not for profit companies
8.3%
Value Percent YoY change
Self employees 2 16.7% 0.0%
Private companies 7 58.3% -30.0%
Governmental workers 2 16.7% -33.3%
Not for profit companies 1 8.3% 0.0%

Transportation in Duncan

How people get around in Duncan

Means of transportation
Value Percent YoY change
Car 12 100% -20.0%
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.

What is the median and average household income in Duncan by zipcode?

Zipcode Population Number of households Median income Average income
62984 1,393 628 $50,288 $66,494

Explore more communities

FAQs about Duncan demographics 

What is the total population of Duncan?

Duncan has a total population of 29 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 -9.4% compared to a year ago.

What is the gender ratio in Duncan?

The gender ratio in Duncan is as follows:
  • 48.3% males (14 residents)
  • 51.7% females (15 residents)

What is the median age in Duncan?

The median age in Duncan is 42.8.

What is the age distribution of the population in Duncan?

The age distribution in Duncan is as follows:
  • Under 15: 21.4% (6 residents)
  • Ages 15-24: 3.6% (1 residents)
  • Ages 25-44: 25% (7 residents)
  • Ages 45-64: 28.6% (8 residents)
  • Over 65: 21.4% (6 residents)

What is the racial and ethnic makeup of Duncan?

The racial and ethnic makeup of Duncan is as follows:
  • White: 96.6% (28 residents)
  • Black or African American: 3.4% (1 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 0% ( residents)
  • Other: 0% ( residents)

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

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

How many housing units are there in Duncan?

There are 15 housing units in Duncan, reflecting a -11.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Duncan has a total of 13 households, with an average of 2 people in each.

What is the median household income in Duncan?

Duncan has a median household income of $50,288, representing a -5.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Duncan?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 75% (9 residents)
  • Blue-collar workers: 25% (3 residents)

Places of employment:
  • Self-employed: 16.7% (2 residents)
  • Private companies: 58.3% (7 residents)
  • Governmental workers: 16.7% (2 residents)
  • Not-for-profit companies: 8.3% (1 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