Cass County, IL demographics:
population, income, and more

Total population
12,784
-0.3% year-over-year change
Median household income
$68,125/yr
5.0% year-over-year change
Housing units
5,676
0.2% year-over-year change

Cass County population

How many people live in Cass County

Cass County is home to 12,784 residents, according to the most recent Census data. Gender-wise, 48.7% of Cass County locals are male, and 51.3% are female.

Total population
12,784
-0.3% year-over-year change
Gender ratio
Male
48.7%
6,230
Female
51.3%
6,554
Value Percent YoY change
Male 6,230 48.7% -0.7%
Female 6,554 51.3% 0.0%
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 Cass County is 38, with the population distributed as follows: about 20.3% are children under 15, then 12% are in the 15 to 24 age group. Adults between 25 and 44 make up 25.6% of the population, while another 24.1% fall into the 45 to 64 bracket. Finally, around 18% are 65 or older.

Median age
38.3
Age breakdown
Under 15
20.3%
15 to 24
12%
25 to 44
25.6%
45 to 64
24.1%
Over 65
18%
Value Percent YoY change
Under 15 2,590 20.3% -0.8%
15 to 24 1,537 12% 0.8%
25 to 44 3,274 25.6% -0.3%
45 to 64 3,076 24.1% 1.7%
Over 65 2,307 18% -3.1%
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

In Cass County, 84% of the population are US-born citizens, while 4.9% have gained naturalized citizenship. At the same time, 11% of residents are non-citizens. As for race, 74.8% of locals are Caucasian, 4% are African American and 0.9% have Asian roots. Another 1% are Indigenous American, 0.6% are Pacific Islanders, while 9.4% identify as another race. There’s also a share of 9.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
84%
Non-U.S.-born citizens
4.9%
Non-citizens
11%
Value Percent YoY change
U.S.-born citizens 10,742 84% -1.9%
Non-U.S.-born citizens 629 4.9% 14.6%
Non-citizens 1,413 11% 6.2%
Racial breakdown
White
74.8%
Black or African American
4%
American Indian and Alaska Native
1%
Asian
0.9%
Native Hawaiian and other Pacific Islander
0.6%
Two or more races
9.4%
Other
9.4%
Value Percent
White 9,562 74.8%
Black or African American 508 4%
American Indian and Alaska Native 128 1%
Asian 117 0.9%
Native Hawaiian and other Pacific Islander 70 0.6%
Two or more races 1,203 9.4%
Other 1,196 9.4%

Households in Cass County

A peek inside Cass County households

Cass County has 5,128 households, with an average of 2 members in each. Of these, 68% are families, while the remaining 32% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
5,128
-0.1% year-over-year change
Average people per household
2
Non-family households
1,642
Family households
3,486
Value Percent YoY change
Non-family households 1,642 32% -7.3%
Family households 3,486 68% 3.7%
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 Cass County

The housing landscape of Cass County

Cass County's housing consists of 5,676 units, with 80.2% 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 11% of the housing landscape.

Housing units
5,676
0.2% year-over-year change
Housing types
Value Percent
1 unit, detached 4,554 80.2%
1 unit, attached 3 0%
2 units 41 0.7%
3 or 4 units 161 2.8%
5 to 9 units 89 1.6%
10 to 19 units 50 0.9%
20 to 49 units 154 2.7%
Mobile home 624 11%
Homes built since 2020
51
21.4% year-over-year change

The age of buildings in Cass County

In Cass County, the median construction year is 1968. About 22.8% of homes were built before the 1940s, with another 7.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 10.4% of homes were added from 2000 to 2009, 1.9% between 2010 and 2019, and 0.9% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,295 22.8% -7.8%
Built between 1940 and 1949 433 7.6% 0.7%
Built between 1950 and 1959 633 11.2% 18.8%
Built between 1960 and 1969 633 11.2% 0.0%
Built between 1970 and 1979 741 13% -15.7%
Built between 1980 and 1989 461 8.1% 7.5%
Built between 1990 and 1999 730 12.9% 0.0%
Built between 2000 and 2009 590 10.4% 26.3%
Built between 2010 and 2019 109 1.9% -6.8%
Built in 2020 or later 51 0.9% 21.4%
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.

Cass County occupancy rates

Out of the 5,128 occupied housing units in Cass County, 75.9% are owner-occupied, while 24.1% are lived in by tenants. Meanwhile, 9.7% of all homes on the local market sit vacant.

Occupied housing units
5,128
-0.1% year-over-year change
Occupancy breakdown
Renter occupied
1,234
Owner occupied
3,894
Value Percent YoY
change
Renter occupied 1,234 24.1% -4.2%
Owner occupied 3,894 75.9% 1.2%
Unoccupied housing units
9.7%
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.

Cass County housing costs

Housing costs in Cass County come to a median of $817 per month, while tenants specifically pay a median gross rent of $723.

Median housing costs per month
$817/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 Cass County
$723/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 Cass County

Cass County education at a glance

About 49.1% of the population in Cass County went to high school, while 20% pursued college studies. Another 5.5% earned an associate degree and 13.4% hold a bachelor’s. Meanwhile, 5.5% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 626 6.5% -5.4%
High school diploma 4,746 49.1% -2.5%
College diploma 1,938 20% 10.1%
Associate degree 534 5.5% -15.2%
Bachelor's degree 1,293 13.4% -2.5%
Graduate degree 528 5.5% 19.5%
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 Cass County

How much people earn in Cass County

The average annual household income in Cass County was $81,028 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.8% change from the previous year. At the same time, the median income stood at $68,125, reflecting a +5% shift over the same period.

Average household income in Cass County
$81,028/year
2.8% year-over-year change
Median household income in Cass County
$68,125/year
5.0% year-over-year change

Cass County income by age

In Cass County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $75,365. Those with someone between 45 and 64 in charge, often well established professionally, earn $79,531 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $48,214, while those led by someone over 65, many of whom may be retired, have about $52,357 in earnings. Overall, 89% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $48,214 5.3%
25 - 44 $75,365 -3.2%
45 - 64 $79,531 9.2%
Over 65 $52,357 6.2%
Above poverty level
11,178
Below poverty level
1,389
Value Percent YoY
change
Above poverty level 11,178 89% -0.2%
Below poverty level 1,389 11% 1.5%

Employment in Cass County

Workforce and job types in Cass County

The job market in Cass County is powered by 5,622 working residents, spread across a range of industries and roles. 57.7% of the working population are employed in professional or administrative positions, while 42.3% are in hands-on or service-based jobs. Also, 6.2% run their own businesses, 72.9% are employed by private companies, and 15.2% work in the public sector.

Workforce demographics

Working population
5,622
-0.8% year-over-year change
White collar
3,242
Blue collar
2,380
Value Percent YoY change
White collar 3,242 57.7% 1.5%
Blue collar 2,380 42.3% -3.8%
Employer type
Self employees
6.2%
Private companies
72.9%
Governmental workers
15.2%
Not for profit companies
5.7%
Value Percent YoY change
Self employees 347 6.2% -7.7%
Private companies 4,100 72.9% -1.8%
Governmental workers 857 15.2% 10.7%
Not for profit companies 318 5.7% -7.8%
Unemployment rate
4.2%
-16.3% year-over-year change

Available workforce

The unemployment rate in Cass County stands at 4.2%, 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 Cass County

How people get around in Cass County

In Cass County, the average commute time is 21 minutes. Commuting methods vary: 91.9% of residents travel by personal vehicle and 0.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
21 min
-5.0% year-over-year change
Means of transportation
Value Percent YoY change
Car 5,065 91.9% -0.3%
Bicycle 38 0.7% 40.7%
Walk 51 0.9% -20.3%
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 Cass County by zipcode?

Zipcode Population Number of households Median income Average income
62611 1,047 461 $62,875 $86,573
62612 1,398 604 $69,569 $82,140
62618 7,428 2,871 $65,208 $76,610
62622 100 33 $0 $0
62627 1,006 432 $63,235 $80,140
62673 361 165 $68,393 $75,690
62691 2,349 981 $78,798 $88,357

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FAQs about Cass County demographics 

What is the total population of Cass County?

Cass County has a total population of 12,784 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 -0.3% compared to a year ago.

What is the gender ratio in Cass County?

The gender ratio in Cass County is as follows:
  • 48.7% males (6,230 residents)
  • 51.3% females (6,554 residents)

What is the median age in Cass County?

The median age in Cass County is 38.3.

What is the age distribution of the population in Cass County?

The age distribution in Cass County is as follows:
  • Under 15: 20.3% (2,590 residents)
  • Ages 15-24: 12% (1,537 residents)
  • Ages 25-44: 25.6% (3,274 residents)
  • Ages 45-64: 24.1% (3,076 residents)
  • Over 65: 18% (2,307 residents)

What is the racial and ethnic makeup of Cass County?

The racial and ethnic makeup of Cass County is as follows:
  • White: 74.8% (9,562 residents)
  • Black or African American: 4% (508 residents)
  • American Indian and Alaska Native: 1% (128 residents)
  • Asian: 0.9% (117 residents)
  • Native Hawaiian and Other Pacific Islander: 0.6% (70 residents)
  • Two or More Races: 9.4% (1,203 residents)
  • Other: 9.4% (1,196 residents)

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

U.S.-born citizens represent 84% of the population in Cass County.

How many housing units are there in Cass County?

There are 5,676 housing units in Cass County, reflecting a +0.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Cass County has a total of 5,128 households, with an average of 2 people in each.

What is the median household income in Cass County?

Cass County has a median household income of $68,125, representing a +5.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Cass County?

The employment rate is 95.8% in Cass County, with a workforce of 5,622 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 57.7% (3,242 residents)
  • Blue-collar workers: 42.3% (2,380 residents)

Places of employment:
  • Self-employed: 6.2% (347 residents)
  • Private companies: 72.9% (4,100 residents)
  • Governmental workers: 15.2% (857 residents)
  • Not-for-profit companies: 5.7% (318 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