Iroquois County, Illinois Demographics 2026

Name: Iroquois County, Illinois Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Iroquois County, Illinois has a population of 26,449, the 51st most populous county in Illinois. The median household income is $66,255 and the median home value is $137,800. The poverty rate is 12.5%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Iroquois County Quick Facts

Population 26,449

Median Household Income $66,255

Median Home Value $137,800

Poverty Rate 12.5%

Unemployment Rate 4.5%

Median Age 44.4 years

Homeownership Rate 80.0%

Affordability Ratio 2.1x

Bachelor's Degree+ 18.2%

High School Graduation 89.1%

Cities/Places 20

Population 26,449 51st of 102

Median Income $66,255 21% lower than state

Poverty Rate 12.5%

Unemployment 4.5%

How Iroquois County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	26,746	26,449	-1.1%
Median household income	$62,439	$66,255	+6.1%
Median home value	$125,400	$137,800	+9.9%

Median Household Income

Iroquois

$66,255

$83,390

National

$80,734

Median Home Value

Iroquois

$137,800

$263,300

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 18.0%

$25K-$50K 20.2%

$50K-$100K 30.9%

$100K+ 30.9%

Detailed income brackets

Under $10K

5.0%

$10K-$15K

4.7%

$15K-$20K

3.6%

$20K-$25K

4.7%

$25K-$30K

3.5%

$30K-$35K

3.8%

$35K-$40K

4.3%

$40K-$45K

5.3%

$45K-$50K

3.5%

$50K-$60K

7.5%

$60K-$75K

9.5%

$75K-$100K

13.8%

$100K-$125K

9.8%

$125K-$150K

8.2%

$150K-$200K

8.1%

$200K+

4.8%

Employment

4.5% Unemployment Rate State: 5.8%|National: 5.2%

60.1% Labor Force Participation

Housing Overview

Owner 80.0%

Renter 20.0%

Affordability Index Very Affordable

2.1x home value to income ratio

Median gross rent $799/mo 14.5% of median household income annually

People & Demographics

Age Distribution

Under 18

21.6%

18-34

17.9%

35-54

23.1%

55-74

27.8%

75+

9.7%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 61 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Iroquois County

City	Population	Median Income	Poverty	Home Value
Watseka	4,780	$43,608	23.4%	$103,700
Gilman	1,612	$70,750	6.0%	$120,500
Onarga	1,430	$78,352	8.6%	$99,300
Clifton	1,385	$92,344	11.9%	$205,400
Sheldon	1,195	$44,280	19.2%	$78,000
Milford	1,052	$46,827	26.8%	$74,600
Ashkum	918	$78,365	5.2%	$150,600
Cissna Park	903	$56,667	14.6%	$130,300
Danforth	611	$54,625	26.7%	$151,200
Crescent City	456	$58,333	3.5%	$116,500
Buckley	422	$53,500	15.4%	$96,800
Martinton	363	$79,000	9.1%	$105,000
Woodland	297	$51,932	5.8%	$86,400
Beaverville	289	$51,000	13.8%	$96,300
Donovan	281	$48,917	18.9%	$87,100
Loda	279	$80,250	19.4%	$108,300
Thawville	210	$42,500	23.6%	$80,800
Iroquois	185	$53,750	20.5%	$92,600
Wellington	165	$54,063	12.1%	$67,200
Papineau	132	$51,250	12.1%	$72,000

Explore Illinois Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Iroquois County is located in Illinois with a total population of 26,449. It is the 51st most populous county out of 102 in Illinois. The county encompasses 20 Census-designated places.

Age Demographics

The median age in Iroquois County is 44.4 years. This is 14% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Iroquois County is $66,255. This is 21% lower than the state median of $83,390. It is also 18% lower than the national median of $80,734. The poverty rate stands at 12.5%. This is 6% higher than the state poverty rate of 11.8%. The unemployment rate is 4.5%. This is 23% lower than the state rate of 5.8%. The median home value is $137,800. Housing costs are 48% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.1x, Iroquois County is one of the most affordable housing markets in the area. 80.0% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 67.1%.

Race & Ethnicity

Iroquois County has a predominantly White (non-Hispanic) population, comprising 87.2% of all residents. Hispanic or Latino residents account for 8.3%. The White (non-Hispanic) population is significantly higher than the state average (87.2% vs 58.1%). The Black or African American population (0.8%) is well below the state average of 13.3%. The Hispanic or Latino population (8.3%) is well below the state average of 18.8%. The Asian population (0.3%) is well below the state average of 5.9%.

Education

18.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 52% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.1%.

Data Sources & Methodology

All figures for Iroquois County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Illinois and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Iroquois County, Illinois?

Iroquois County has a population of 26,449, making it the 51st most populous county in Illinois.

What is the median income in Iroquois County?

The median household income in Iroquois County is $66,255 with a poverty rate of 12.5%.

How many cities are in Iroquois County, Illinois?

Iroquois County contains 20 Census-designated places.