Dennison, IL demographics:
population, income, and more

Total population
546
-10.3% year-over-year change
Median household income
$47,179/yr
% year-over-year change
Housing units
239
-9.5% year-over-year change

Dennison population

How many people live in Dennison

Dennison is home to 546 residents, according to the most recent Census data. Gender-wise, 57.9% of Dennison locals are male, and 42.1% are female.

Total population
546
-10.3% year-over-year change
Gender ratio
Male
57.9%
316
Female
42.1%
230
Value Percent YoY change
Male 316 57.9% -10.2%
Female 230 42.1% -10.5%
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 Dennison is 49, with the population distributed as follows: about 15.8% are children under 15, then 13.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 15% of the population, while another 28.9% fall into the 45 to 64 bracket. Finally, around 26.4% are 65 or older.

Median age
48.6
Age breakdown
Under 15
15.8%
15 to 24
13.9%
25 to 44
15%
45 to 64
28.9%
Over 65
26.4%
Value Percent YoY change
Under 15 86 15.8% -34.9%
15 to 24 76 13.9% 10.1%
25 to 44 82 15% -55.2%
45 to 64 158 28.9% 49.1%
Over 65 144 26.4% 21.0%
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 7.5% 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 546 100% -10.3%
Racial breakdown
White
92.5%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
7.5%
Other
0%
Value Percent
White 505 92.5%
Two or more races 41 7.5%

Households in Dennison

A peek inside Dennison households

Dennison has 222 households, with an average of 2 members in each. Of these, 87.8% are families, while the remaining 12.2% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
222
-10.5% year-over-year change
Average people per household
2
Non-family households
27
Family households
195
Value Percent YoY change
Non-family households 27 12.2% 12.5%
Family households 195 87.8% -12.9%
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 Dennison

The housing landscape of Dennison

Dennison's housing consists of 239 units, with 81.2% 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 18.8% of the housing landscape.

Housing units
239
-9.5% year-over-year change
Housing types
Value Percent
1 unit, detached 194 81.2%
Mobile home 45 18.8%
Homes built since 2020
% year-over-year change

The age of buildings in Dennison

In Dennison, the median construction year is 1986. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1940 and 1949 17 7.1% 6.2%
Built between 1950 and 1959 27 11.3% 17.4%
Built between 1970 and 1979 43 18% 13.2%
Built between 1980 and 1989 52 21.8% 26.8%
Built between 1990 and 1999 45 18.8% 15.4%
Built between 2000 and 2009 36 15.1% -57.1%
Built between 2010 and 2019 19 8% -17.4%
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.

Dennison occupancy rates

Out of the 222 occupied housing units in Dennison, 87.8% are owner-occupied, while 12.2% are lived in by tenants. Meanwhile, 7.1% of all homes on the local market sit vacant.

Occupied housing units
222
-10.5% year-over-year change
Occupancy breakdown
Renter occupied
27
Owner occupied
195
Value Percent YoY
change
Renter occupied 27 12.2% 12.5%
Owner occupied 195 87.8% -12.9%
Unoccupied housing units
7.1%
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.

Dennison housing costs

Median housing costs per month
$875/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 Dennison

Dennison education at a glance

About 53.1% of the population in Dennison went to high school, while 11.4% pursued college studies. Another 13% earned an associate degree and 13.8% hold a bachelor’s. Meanwhile, 8.7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 220 53.1% 20.2%
College diploma 47 11.4% 14.6%
Associate degree 54 13% 14.9%
Bachelor's degree 57 13.8% -60.4%
Graduate degree 36 8.7% 63.6%
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 Dennison

How much people earn in Dennison

The average annual household income in Dennison was $131,637 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +32.6% change from the previous year.

Average household income in Dennison
$131,637/year
32.6% year-over-year change
Median household income in Dennison
$47,179/year
% year-over-year change

Dennison income by age

In Dennison, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $2,499. Those with someone between 45 and 64 in charge, often well established professionally, earn $250,001 overall. Overall, 82.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $2,499 -97.6%
45 - 64 $250,001 N/A
Over 65 $46,154 0.6%
Above poverty level
443
Below poverty level
96
Value Percent YoY
change
Above poverty level 443 82.2% -14.3%
Below poverty level 96 17.8% 12.9%

Employment in Dennison

Workforce and job types in Dennison

40.6% of the working population are employed in professional or administrative positions, while 59.4% are in hands-on or service-based jobs. Also, 10.3% run their own businesses, 45.4% are employed by private companies, and 33.3% work in the public sector.

Workforce demographics

White collar
67
Blue collar
98
Value Percent YoY change
White collar 67 40.6% 48.9%
Blue collar 98 59.4% -23.4%
Employer type
Self employees
10.3%
Private companies
45.4%
Governmental workers
33.3%
Not for profit companies
10.9%
Value Percent YoY change
Self employees 17 10.3% 54.5%
Private companies 75 45.4% -33.0%
Governmental workers 55 33.3% 10.0%
Not for profit companies 18 10.9% N/A

Transportation in Dennison

How people get around in Dennison

In Dennison, the average commute time is 28 minutes.

Commute time
28 min
-6.7% year-over-year change
Means of transportation
Value Percent YoY change
Car 172 100% -5.5%
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 Dennison by zipcode?

Zipcode Population Number of households Median income Average income
62423 546 222 $47,179 $131,637

Explore more communities

FAQs about Dennison demographics 

What is the total population of Dennison?

Dennison has a total population of 546 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 -10.3% compared to a year ago.

What is the gender ratio in Dennison?

The gender ratio in Dennison is as follows:
  • 57.9% males (316 residents)
  • 42.1% females (230 residents)

What is the median age in Dennison?

The median age in Dennison is 48.6.

What is the age distribution of the population in Dennison?

The age distribution in Dennison is as follows:
  • Under 15: 15.8% (86 residents)
  • Ages 15-24: 13.9% (76 residents)
  • Ages 25-44: 15% (82 residents)
  • Ages 45-64: 28.9% (158 residents)
  • Over 65: 26.4% (144 residents)

What is the racial and ethnic makeup of Dennison?

The racial and ethnic makeup of Dennison is as follows:
  • White: 92.5% (505 residents)
  • Black or African American: 0% ( residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 7.5% (41 residents)
  • Other: 0% ( residents)

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

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

How many housing units are there in Dennison?

There are 239 housing units in Dennison, reflecting a -9.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Dennison has a total of 222 households, with an average of 2 people in each.

What is the median household income in Dennison?

Dennison has a median household income of $47,179, representing a % shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Dennison?

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

Job types:
  • White-collar workers: 40.6% (67 residents)
  • Blue-collar workers: 59.4% (98 residents)

Places of employment:
  • Self-employed: 10.3% (17 residents)
  • Private companies: 45.4% (75 residents)
  • Governmental workers: 33.3% (55 residents)
  • Not-for-profit companies: 10.9% (18 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