South Iroquois, East Illinois, IL demographics:
population, income, and more

Total population
3,411
-3.9% year-over-year change
Median household income
$69,666/yr
16.7% year-over-year change
Housing units
1,542
-6.1% year-over-year change

South Iroquois population

How many people live in South Iroquois

South Iroquois is home to 3,411 residents, according to the most recent Census data. Gender-wise, 47.9% of South Iroquois locals are male, and 52.1% are female.

Total population
3,411
-3.9% year-over-year change
Gender ratio
Male
47.9%
1,633
Female
52.1%
1,777
Value Percent YoY change
Male 1,633 47.9% -4.2%
Female 1,777 52.1% -3.7%
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 South Iroquois is 40, with the population distributed as follows: about 18.7% are children under 15, then 12.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 26% of the population, while another 23.7% fall into the 45 to 64 bracket. Finally, around 19.4% are 65 or older.

Median age
40
Age breakdown
Under 15
18.7%
15 to 24
12.3%
25 to 44
26%
45 to 64
23.7%
Over 65
19.4%
Value Percent YoY change
Under 15 638 18.7% -3.8%
15 to 24 421 12.3% -5.8%
25 to 44 885 26% 3.4%
45 to 64 807 23.7% -4.5%
Over 65 660 19.4% -10.6%
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 South Iroquois, 96.5% of the population are US-born citizens, while 2.2% have gained naturalized citizenship. At the same time, 1.3% of residents are non-citizens. As for race, 90.2% of locals are Caucasian, 0.9% are African American and 0.4% have Asian roots. There’s also a share of 4.6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
96.5%
Non-U.S.-born citizens
2.2%
Non-citizens
1.3%
Value Percent YoY change
U.S.-born citizens 3,292 96.5% -3.5%
Non-U.S.-born citizens 76 2.2% -20.8%
Non-citizens 43 1.3% -4.4%
Racial breakdown
White
90.2%
Black or African American
0.9%
American Indian and Alaska Native
0.6%
Asian
0.4%
Native Hawaiian and other Pacific Islander
0%
Two or more races
4.6%
Other
3.4%
Value Percent
White 3,075 90.2%
Black or African American 30 0.9%
American Indian and Alaska Native 19 0.6%
Asian 12 0.4%
Two or more races 158 4.6%
Other 117 3.4%

Households in South Iroquois

A peek inside South Iroquois households

South Iroquois has 1,406 households, with an average of 2 members in each. Of these, 66.5% are families, while the remaining 33.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,406
-3.6% year-over-year change
Average people per household
2
Non-family households
472
Family households
935
Value Percent YoY change
Non-family households 472 33.6% -8.9%
Family households 935 66.5% -0.5%
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 South Iroquois

The housing landscape of South Iroquois

South Iroquois's housing consists of 1,542 units, with 87.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.3% 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 1.2% of the housing landscape.

Housing units
1,542
-6.1% year-over-year change
Housing types
Value Percent
1 unit, detached 1,348 87.4%
1 unit, attached 20 1.3%
2 units 57 3.7%
3 or 4 units 23 1.5%
5 to 9 units 20 1.3%
10 to 19 units 42 2.7%
20 to 49 units 10 0.6%
50 or more units 4 0.3%
Mobile home 19 1.2%
Homes built since 2020
% year-over-year change

The age of buildings in South Iroquois

In South Iroquois, the median construction year is 1946. About 37.9% of homes were built before the 1940s, with another 9.1% 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 584 37.9% -4.7%
Built between 1940 and 1949 141 9.1% 2.9%
Built between 1950 and 1959 145 9.4% -21.2%
Built between 1960 and 1969 124 8% -16.2%
Built between 1970 and 1979 274 17.8% 3.0%
Built between 1980 and 1989 74 4.8% 2.8%
Built between 1990 and 1999 86 5.6% -31.8%
Built between 2000 and 2009 74 4.8% 0.0%
Built between 2010 and 2019 40 2.6% 73.9%
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.

South Iroquois occupancy rates

Out of the 1,406 occupied housing units in South Iroquois, 77.9% are owner-occupied, while 22.1% are lived in by tenants. Meanwhile, 8.8% of all homes on the local market sit vacant.

Occupied housing units
1,406
-3.6% year-over-year change
Occupancy breakdown
Renter occupied
311
Owner occupied
1,095
Value Percent YoY
change
Renter occupied 311 22.1% -7.2%
Owner occupied 1,095 77.9% -2.5%
Unoccupied housing units
8.8%
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.

South Iroquois housing costs

Housing costs in South Iroquois come to a median of $789 per month, while tenants specifically pay a median gross rent of $893.

Median housing costs per month
$789/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 South Iroquois
$893/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 South Iroquois

South Iroquois education at a glance

About 40.5% of the population in South Iroquois went to high school, while 19.6% pursued college studies. Another 12.9% earned an associate degree and 16.6% hold a bachelor’s. Meanwhile, 7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 93 3.5% 2.2%
High school diploma 1,074 40.5% -15.5%
College diploma 519 19.6% -5.1%
Associate degree 342 12.9% -4.7%
Bachelor's degree 440 16.6% 27.9%
Graduate degree 186 7% 33.8%
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 South Iroquois

How much people earn in South Iroquois

The average annual household income in South Iroquois was $83,072 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +6.3% change from the previous year. At the same time, the median income stood at $69,666, reflecting a +16.7% shift over the same period.

Average household income in South Iroquois
$83,072/year
6.3% year-over-year change
Median household income in South Iroquois
$69,666/year
16.7% year-over-year change

South Iroquois income by age

In South Iroquois, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $89,545. Those with someone between 45 and 64 in charge, often well established professionally, earn $73,375 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $87,020, while those led by someone over 65, many of whom may be retired, have about $46,563 in earnings. Overall, 87.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $87,020 -23.0%
25 - 44 $89,545 8.1%
45 - 64 $73,375 21.4%
Over 65 $46,563 2.8%
Above poverty level
2,916
Below poverty level
420
Value Percent YoY
change
Above poverty level 2,916 87.4% -3.1%
Below poverty level 420 12.6% -1.9%

Employment in South Iroquois

Workforce and job types in South Iroquois

72.1% of the working population are employed in professional or administrative positions, while 27.9% are in hands-on or service-based jobs. Also, 18.6% run their own businesses, 62% are employed by private companies, and 13.7% work in the public sector.

Workforce demographics

White collar
1,219
Blue collar
472
Value Percent YoY change
White collar 1,219 72.1% 12.6%
Blue collar 472 27.9% -5.0%
Employer type
Self employees
18.6%
Private companies
62%
Governmental workers
13.7%
Not for profit companies
5.7%
Value Percent YoY change
Self employees 315 18.6% 14.6%
Private companies 1,049 62% 4.6%
Governmental workers 231 13.7% 18.5%
Not for profit companies 96 5.7% -9.4%

Transportation in South Iroquois

How people get around in South Iroquois

Commuting methods vary: 93% of residents travel by personal vehicle and 6.6% 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 1,368 93% -0.1%
Bus or trolleybus 3 0.2% 50.0%
Bicycle 3 0.2% 50.0%
Walk 97 6.6% 86.5%
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.

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FAQs about South Iroquois demographics 

What is the total population of South Iroquois?

South Iroquois has a total population of 3,411 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 -3.9% compared to a year ago.

What is the gender ratio in South Iroquois?

The gender ratio in South Iroquois is as follows:
  • 47.9% males (1,633 residents)
  • 52.1% females (1,777 residents)

What is the median age in South Iroquois?

The median age in South Iroquois is 40.

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

The age distribution in South Iroquois is as follows:
  • Under 15: 18.7% (638 residents)
  • Ages 15-24: 12.3% (421 residents)
  • Ages 25-44: 26% (885 residents)
  • Ages 45-64: 23.7% (807 residents)
  • Over 65: 19.4% (660 residents)

What is the racial and ethnic makeup of South Iroquois?

The racial and ethnic makeup of South Iroquois is as follows:
  • White: 90.2% (3,075 residents)
  • Black or African American: 0.9% (30 residents)
  • American Indian and Alaska Native: 0.6% (19 residents)
  • Asian: 0.4% (12 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 4.6% (158 residents)
  • Other: 3.4% (117 residents)

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

U.S.-born citizens represent 96.5% of the population in South Iroquois.

How many housing units are there in South Iroquois?

There are 1,542 housing units in South Iroquois, reflecting a -6.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

South Iroquois has a total of 1,406 households, with an average of 2 people in each.

What is the median household income in South Iroquois?

South Iroquois has a median household income of $69,666, representing a +16.7% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for South Iroquois?

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

Job types:
  • White-collar workers: 72.1% (1,219 residents)
  • Blue-collar workers: 27.9% (472 residents)

Places of employment:
  • Self-employed: 18.6% (315 residents)
  • Private companies: 62% (1,049 residents)
  • Governmental workers: 13.7% (231 residents)
  • Not-for-profit companies: 5.7% (96 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