Iroquois County, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Iroquois County, IL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around averageLess healthy than 71% of counties in Illinois
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C
Income Below average
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D
Education Well below averageLess educated than 77% of counties in Illinois
Source: Map AI Methodology
Population: density and quick facts
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 26,449 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 23.7 | 219.1 | 86.4 |
| Population growth (%/yr) | -1.07% | -0.16% | 0.59% |
| Median age | 42.8 | 37.4 | 37.3 |
| Households | 11,443 | 5,035,584 | 130,235,071 |
Population in Iroquois County declined by 11.9% from 2009 to 2024, reaching 26,449 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Iroquois County is Boomers, aged 61–79, at 21.9% of residents. That is 5.0 points above Illinois as a whole.
- Gen Z 13–28 4,724 17.9% -3.4 pts
- Millennials 29–44 4,650 17.6% -4.3 pts
- Gen X 45–60 5,626 21.3% +0.9 pts
- Boomers 61–79 5,800 21.9% +5.0 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Illinois, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.6% of the people living in Iroquois County and men 49.4%.
- Women 50.6% Illinois 50.6%
- Men 49.4% Illinois 49.4%
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100% of everyone living in Iroquois County
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Economy
Iroquois County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $66,798 | $84,042 | $80,455 |
| Income growth (%/yr) | 4.20% | 4.46% | 4.80% |
| Unemployment rate | 4.5% | 5.8% | 5.2% |
The median household income in Iroquois County is about 21% lower than in Illinois.
Housing
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $96,428 | $149,936 | $248,835 |
| Median rent | $798 | $1,274 | $1,407 |
| Homeownership rate | 80.0% | 67.1% | 65.2% |
The median home price in Iroquois County is about 10.1 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $798 per month for that long.
Commute Time & Mobility
Commuters in Iroquois County spend about 40 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 168 hours, about 7.0 full days, spent commuting.
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 20.2 | 23.6 | 22.4 |
| Round-trip commute (min) | 40.4 | 47.3 | 44.8 |
| Yearly time spent (hours) | 168 | 197 | 187 |
| Estimated yearly cost | $5,216 | $6,104 | $5,790 |
| Work from home | 7.6% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 3,259 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 482 | 1,547 | 1,355 |
Fastest commutes among counties in
Illinois:
Edgar County (12.0 min), Brown County (12.7 min), Morgan County (13.1 min).
Slowest:
Calhoun County (43.8 min), Pulaski County (31.2 min), Pope County (31.0 min).
The average commute time in Iroquois County is 20 minutes, shorter than the 24 minutes in Illinois.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Iroquois County has a education index of D, which means it is barely educated.
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 16.4% | 34.1% | 31.6% |
| Average household size | 2.27 | 2.46 | 2.53 |
Highest education index among counties in
Illinois:
DuPage County (0.4), Champaign County (0.4), Lake County (0.4).
Lowest:
Hardin County (0.2), Fayette County (0.2), Perry County (0.2).
Health
Iroquois County has a health index of B, which means it is quite healthy.
| Metric | Iroquois County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.8 | 77.9 | 78.3 |
| Self-rated poor health | 16.6% | 15.6% | 16.3% |
| Smokers | 20.0% | 19.2% | 19.0% |
Highest health index among counties in
Illinois:
DuPage County (0.8), Champaign County (0.8), Monroe County (0.8).
Lowest:
Alexander County (0.8), Pulaski County (0.8), Gallatin County (0.8).
Iroquois County, IL Compared With Nearby Counties
How Iroquois County, IL compares with the 2 counties closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Iroquois County, IL | 26,449 | $66,798 #2/3 | $96,428 #2/3 | 20.2 min #3/3 |
| Kankakee County, IL | 106,635 | $72,136 | $136,128 | 20.0 min |
| Vermilion County, IL | 72,384 | $57,282 | $82,480 | 16.6 min |
Frequently Asked Questions
Common questions about Iroquois County, Illinois.
What is the population of Iroquois County, Illinois?
About 26,449 people live in Iroquois County, Illinois, in 11,443 households of 2.3 people on average. The median age is 42.8, so residents are older than the U.S. median of 37.3 by about 6 years.
Is Iroquois County, Illinois urban or rural?
Averaged over its land area, Iroquois County, Illinois has 24 people per square mile, a density typical of rural areas. That is about 27% of the U.S. average of 86.
Is Iroquois County, Illinois an affordable place to live?
The median home costs 1.4 times the median household income ($96,428 against $66,798), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $798 a month takes about 14% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How common is a college degree in Iroquois County, Illinois?
16.4% of adults in Iroquois County, Illinois hold a bachelor's degree or higher (about 1 in 6), well below the U.S. share of 31.6%.
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