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

Total population
26,449
-1.1% year-over-year change
Median household income
$66,255/yr
6.1% year-over-year change
Housing units
12,789
-0.2% year-over-year change

Iroquois County population

How many people live in Iroquois County

Iroquois County is home to 26,449 residents, according to the most recent Census data. Gender-wise, 49.6% of Iroquois County locals are male, and 50.4% are female.

Total population
26,449
-1.1% year-over-year change
Gender ratio
Male
49.6%
13,122
Female
50.4%
13,327
Value Percent YoY change
Male 13,122 49.6% -0.7%
Female 13,327 50.4% -1.6%
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 Iroquois County is 44, with the population distributed as follows: about 17.3% are children under 15, then 12% are in the 15 to 24 age group. Adults between 25 and 44 make up 21.6% of the population, while another 26.5% fall into the 45 to 64 bracket. Finally, around 22.6% are 65 or older.

Median age
44.4
Age breakdown
Under 15
17.3%
15 to 24
12%
25 to 44
21.6%
45 to 64
26.5%
Over 65
22.6%
Value Percent YoY change
Under 15 4,579 17.3% -1.9%
15 to 24 3,170 12% -0.3%
25 to 44 5,723 21.6% -0.6%
45 to 64 7,000 26.5% -2.8%
Over 65 5,977 22.6% 0.6%
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 Iroquois County, 96.2% of the population are US-born citizens, while 1.8% have gained naturalized citizenship. At the same time, 1.9% of residents are non-citizens. As for race, 88.8% of locals are Caucasian, 0.8% are African American and 0.3% have Asian roots. There’s also a share of 5.6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
96.2%
Non-U.S.-born citizens
1.8%
Non-citizens
1.9%
Value Percent YoY change
U.S.-born citizens 25,451 96.2% -1.0%
Non-U.S.-born citizens 484 1.8% -4.0%
Non-citizens 514 1.9% -1.9%
Racial breakdown
White
88.8%
Black or African American
0.8%
American Indian and Alaska Native
0.5%
Asian
0.3%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.6%
Other
4%
Value Percent
White 23,481 88.8%
Black or African American 213 0.8%
American Indian and Alaska Native 137 0.5%
Asian 89 0.3%
Two or more races 1,471 5.6%
Other 1,058 4%

Households in Iroquois County

A peek inside Iroquois County households

Iroquois County has 11,443 households, with an average of 2 members in each. Of these, 63.4% are families, while the remaining 36.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
11,443
1.0% year-over-year change
Average people per household
2
Non-family households
4,192
Family households
7,251
Value Percent YoY change
Non-family households 4,192 36.6% 0.3%
Family households 7,251 63.4% 1.4%
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 Iroquois County

The housing landscape of Iroquois County

Iroquois County's housing consists of 12,789 units, with 85.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 2.6% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.9% of the housing landscape.

Housing units
12,789
-0.2% year-over-year change
Housing types
Value Percent
1 unit, detached 10,895 85.2%
1 unit, attached 337 2.6%
2 units 312 2.4%
3 or 4 units 301 2.4%
5 to 9 units 211 1.6%
10 to 19 units 138 1.1%
20 to 49 units 62 0.5%
50 or more units 28 0.2%
Mobile home 502 3.9%
Boat, RV, van, etc. 3 0%
Homes built since 2020
29
1,350.0% year-over-year change

The age of buildings in Iroquois County

In Iroquois County, the median construction year is 1960. About 30.3% of homes were built before the 1940s, with another 6.5% going up by 1949. Most development happened in the second half of the 20th century. Then, 6% of homes were added from 2000 to 2009, 2.2% between 2010 and 2019, and 0.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 3,875 30.3% 3.3%
Built between 1940 and 1949 828 6.5% -5.2%
Built between 1950 and 1959 1,741 13.6% 0.3%
Built between 1960 and 1969 1,329 10.4% -5.3%
Built between 1970 and 1979 2,140 16.7% -2.5%
Built between 1980 and 1989 934 7.3% 3.8%
Built between 1990 and 1999 853 6.7% -9.2%
Built between 2000 and 2009 774 6% 1.0%
Built between 2010 and 2019 286 2.2% 14.4%
Built in 2020 or later 29 0.2% 1,350.0%
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.

Iroquois County occupancy rates

Out of the 11,443 occupied housing units in Iroquois County, 80% are owner-occupied, while 20% are lived in by tenants. Meanwhile, 10.5% of all homes on the local market sit vacant.

Occupied housing units
11,443
1.0% year-over-year change
Occupancy breakdown
Renter occupied
2,289
Owner occupied
9,154
Value Percent YoY
change
Renter occupied 2,289 20% -5.9%
Owner occupied 9,154 80% 2.8%
Unoccupied housing units
10.5%
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.

Iroquois County housing costs

Housing costs in Iroquois County come to a median of $852 per month, while tenants specifically pay a median gross rent of $799.

Median housing costs per month
$852/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 Iroquois County
$799/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 Iroquois County

Iroquois County education at a glance

About 46.7% of the population in Iroquois County went to high school, while 22.8% pursued college studies. Another 10% earned an associate degree and 11.9% hold a bachelor’s. Meanwhile, 5% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 719 3.5% 3.8%
High school diploma 9,697 46.7% -5.9%
College diploma 4,734 22.8% 2.2%
Associate degree 2,076 10% 0.4%
Bachelor's degree 2,472 11.9% 6.7%
Graduate degree 1,048 5% 12.3%
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 Iroquois County

How much people earn in Iroquois County

The average annual household income in Iroquois County was $84,074 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +3.3% change from the previous year. At the same time, the median income stood at $66,255, reflecting a +6.1% shift over the same period.

Average household income in Iroquois County
$84,074/year
3.3% year-over-year change
Median household income in Iroquois County
$66,255/year
6.1% year-over-year change

Iroquois County income by age

In Iroquois County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $85,494. Those with someone between 45 and 64 in charge, often well established professionally, earn $76,234 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $41,474, while those led by someone over 65, many of whom may be retired, have about $50,086 in earnings. Overall, 87.5% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $41,474 3.9%
25 - 44 $85,494 5.2%
45 - 64 $76,234 7.5%
Over 65 $50,086 6.5%
Above poverty level
22,515
Below poverty level
3,214
Value Percent YoY
change
Above poverty level 22,515 87.5% 0.3%
Below poverty level 3,214 12.5% -7.2%

Employment in Iroquois County

Workforce and job types in Iroquois County

The job market in Iroquois County is powered by 12,390 working residents, spread across a range of industries and roles. 65% of the working population are employed in professional or administrative positions, while 35% are in hands-on or service-based jobs. Also, 12.6% run their own businesses, 66.4% are employed by private companies, and 12.2% work in the public sector.

Workforce demographics

Working population
12,390
1.6% year-over-year change
White collar
8,054
Blue collar
4,336
Value Percent YoY change
White collar 8,054 65% 0.4%
Blue collar 4,336 35% 3.8%
Employer type
Self employees
12.6%
Private companies
66.4%
Governmental workers
12.2%
Not for profit companies
8.7%
Value Percent YoY change
Self employees 1,563 12.6% -6.3%
Private companies 8,233 66.4% 3.1%
Governmental workers 1,516 12.2% -0.1%
Not for profit companies 1,078 8.7% 5.0%
Unemployment rate
4.5%
-5.5% year-over-year change

Available workforce

The unemployment rate in Iroquois County stands at 4.5%, 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 Iroquois County

How people get around in Iroquois County

Commuting methods vary: 88.4% of residents travel by personal vehicle and 2% 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 10,829 88.4% 1.3%
Taxicab 9 0.1% 0.0%
Bus or trolleybus 23 0.2% -23.3%
Ferryboat 2 0% -33.3%
Bicycle 20 0.2% 33.3%
Walk 249 2% -3.5%
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 Iroquois County by zipcode?

Zipcode Population Number of households Median income Average income
60911 1,325 521 $89,792 $110,178
60912 475 270 $59,375 $64,379
60918 754 338 $73,500 $81,055
60922 2,088 838 $62,000 $96,020
60924 1,565 655 $78,250 $94,149
60926 50 27 $45,313 $42,622
60927 2,300 852 $102,143 $115,801
60928 493 244 $55,000 $70,903
60930 761 328 $58,125 $68,447
60931 510 190 $53,500 $85,117

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FAQs about Iroquois County demographics 

What is the total population of Iroquois County?

Iroquois County has a total population of 26,449 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 -1.1% compared to a year ago.

What is the gender ratio in Iroquois County?

The gender ratio in Iroquois County is as follows:
  • 49.6% males (13,122 residents)
  • 50.4% females (13,327 residents)

What is the median age in Iroquois County?

The median age in Iroquois County is 44.4.

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

The age distribution in Iroquois County is as follows:
  • Under 15: 17.3% (4,579 residents)
  • Ages 15-24: 12% (3,170 residents)
  • Ages 25-44: 21.6% (5,723 residents)
  • Ages 45-64: 26.5% (7,000 residents)
  • Over 65: 22.6% (5,977 residents)

What is the racial and ethnic makeup of Iroquois County?

The racial and ethnic makeup of Iroquois County is as follows:
  • White: 88.8% (23,481 residents)
  • Black or African American: 0.8% (213 residents)
  • American Indian and Alaska Native: 0.5% (137 residents)
  • Asian: 0.3% (89 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 5.6% (1,471 residents)
  • Other: 4% (1,058 residents)

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

U.S.-born citizens represent 96.2% of the population in Iroquois County.

How many housing units are there in Iroquois County?

There are 12,789 housing units in Iroquois 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 Iroquois County and what is the average household size?

Iroquois County has a total of 11,443 households, with an average of 2 people in each.

What is the median household income in Iroquois County?

Iroquois County has a median household income of $66,255, representing a +6.1% shift from the previous year, according to the U.S. Census Bureau.

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

The employment rate is 95.5% in Iroquois County, with a workforce of 12,390 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 65% (8,054 residents)
  • Blue-collar workers: 35% (4,336 residents)

Places of employment:
  • Self-employed: 12.6% (1,563 residents)
  • Private companies: 66.4% (8,233 residents)
  • Governmental workers: 12.2% (1,516 residents)
  • Not-for-profit companies: 8.7% (1,078 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