County · Illinois

Iroquois County, Illinois

Iroquois County, Illinois. Iroquois County had 26,150 residents in 2025 by the Census Bureau's estimate, down 3.4% since 2020, a steeper fall than Illinois's (−0.8%). It holds 47 places (21 cities, villages and boroughs and 26 towns and townships) and 9 census tracts. GEOID 17075.

Residents, July 2025 estimate

26,150

Census Bureau estimate (no margin published)
2020 Census count: 27,077 · ACS 2020-2024: 26,449

Median household income

$66,255

±$2,456 (90% margin)
Illinois: $83,390

Median home value

$137,800

±$9,776 (90% margin)
Illinois: $263,300

Median gross rent

$799

±$33 (90% margin)
Illinois: $1,274

How many people live in Iroquois County, and is it growing?

The 2020 Census counted 27,077 residents in Iroquois County. The Census Bureau estimates 26,150 for July 1, 2025, down 3.4% since 2020, a steeper fall than Illinois's (−0.8%). The 2020-2024 American Community Survey puts the population at 26,449 over 1,117 square miles of land.

July 2020→2021 −197 (26,770)
2021→2022 −349 (26,421)
2022→2023 −286 (26,135)
2023→2024 +87 (26,222)
2024→2025 −72 (26,150)

Iroquois County in Illinois. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Iroquois County	Illinois	Change since 2015-2019
Total population	26,449	12,694,798	−1,363
Households	11,443±186	5,036,449	−298
Average household size	2.27±0.04	2.46	−0.06
Housing units	12,789±38	5,457,452	−704

Iroquois County's population since 2000

From 31,334 in 2000 to 26,150 in 2025: down 16.5%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 31,334
2005 (estimate) 30,548
2010 Census 29,718
2015 (estimate) 28,529
2020 Census 27,077
2025 (estimate) 26,150

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Iroquois County?

Iroquois County holds 47 places: 21 cities, villages and boroughs (incorporated places) and 26 towns and townships (county subdivisions with their own government). The largest is Watseka with 4,510 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Iroquois County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Watseka	city	4,679	4,780±292	$43,608	$103,700	23.4%	100%
Middleport Township	township	3,767	3,645±26	$40,307	$105,700	27.6%	100%
Chebanse Township	township	2,862	2,811±36	$83,281	$198,100	8.0%	100%
Belmont Township	township	2,410	2,235±292	$73,333	$129,300	14.6%	100%
Douglas Township, Iroquois County	township	2,049	1,933±280	$74,196	$130,000	5.9%	100%
Gilman	city	1,738	1,612±205	$70,750	$120,500	6.1%	100%
Onarga Township	township	1,613	1,591±232	$72,083	$107,700	10.1%	100%
Milford Township	township	1,475	1,494±186	$53,750	$88,600	18.8%	100%
Loda Township	township	1,429	1,525±266	$94,464	$237,600	5.0%	100%
Ashkum Township	township	1,420	1,438±195	$90,313	$158,200	4.0%	100%
Clifton	village	1,352	1,385±224	$92,344	$205,400	11.9%	100%
Onarga	village	1,333	1,430±224	$78,352	$99,300	8.6%	100%
Sheldon Township	township	1,239	1,285±250	$47,656	$82,800	17.8%	100%
Milford	village	1,158	1,052±153	$46,827	$74,600	26.8%	100%
Pigeon Grove Township	township	1,103	1,221±181	$69,107	$139,100	11.4%	100%
Sheldon	village	965	1,195±256	$44,280	$78,000	19.2%	100%
Danforth Township	township	883	846±161	$54,598	$174,200	20.1%	100%
Artesia Township	township	854	746±180	$70,000	$140,600	8.7%	100%
Cissna Park	village	817	903±146	$56,667	$130,300	14.6%	100%
Martinton Township	township	813	939±210	$88,661	$123,100	5.0%	100%
Ashkum	village	750	918±151	$78,365	$150,600	5.2%	100%
Ash Grove Township, Iroquois County	township	657	615±129	$77,500	$183,600	7.6%	100%
Chebanse	village	1,044	920±153	$65,278	$161,500	1.5%	62%
Danforth	village	594	611±139	$54,625	$151,200	26.7%	100%
Crescent Township	township	567	482±111	$75,833	$119,300	0.8%	100%
Crescent City	village	552	456±104	$58,333	$116,500	3.5%	100%
Beaverville TownshipGEOID 1707504520	township	515	408±79	$54,141	$80,900	15.2%	100%
Iroquois Township	township	512	465±171	$60,227	$206,600	15.7%	100%
Buckley	village	495	422±101	$53,500	$96,800	15.4%	100%
Beaver Township	township	458	448±101	$49,750	$104,300	11.8%	100%
Papineau TownshipGEOID 1707557589	township	445	307±87	$59,886	$201,000	6.2%	100%
Concord Township, Iroquois County	township	399	370±101	$56,000	$92,200	16.5%	100%
Lovejoy TownshipGEOID 1707544979	township	382	517±157	$84,028	$181,300	3.9%	100%
Loda	village	356	279±88	$80,250	$108,300	19.4%	100%
Martinton	village	334	363±101	$79,000	$105,000	9.1%	100%
Ridgeland TownshipGEOID 1707563901	township	328	455±210	$71,250	$94,400	10.8%	100%
Fountain Creek TownshipGEOID 1707527286	township	315	213±60	$70,208	$131,900	12.7%	100%
BeavervilleGEOID 1704507	village	306	289±62	$51,000	$96,300	13.8%	100%
Donovan	village	251	281±86	$48,917	$87,100	18.9%	100%
WoodlandGEOID 1783102	village	248	297±112	$51,932	$86,400	5.8%	100%
Stockland TownshipGEOID 1707572773	township	216	117±70	$75,511	not published	0.0%	100%
Thawville	village	215	210±54	$42,500	$80,800	23.6%	100%
WellingtonGEOID 1779735	village	206	165±62	$54,063	$67,200	12.1%	100%
Milks Grove TownshipGEOID 1707549074	township	204	224±130	$245,147	$289,700	0.0%	100%
Prairie Green TownshipGEOID 1707561665	township	162	119±84	$150,714	$283,900	9.2%	100%
Iroquois	village	133	185±80	$53,750	$92,600	20.5%	100%
PapineauGEOID 1757576	village	133	132±39	$51,250	$72,000	12.1%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Iroquois County?

The median resident of Iroquois County is 44.4 years old; 21.6% are under 18 and 22.6% are 65 or older. The largest group is non-Hispanic white residents at 87.2%, then Hispanic or Latino residents (of any race) at 8.3%. 3.5% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Iroquois County	Illinois	Change since 2015-2019
Median age	44.4±0.3	39.0	no clear change
Under 18 years	21.6%±0.1 pts	21.8%	–
65 years and over	22.6%±0.3 pts	17.0%	–
Hispanic or Latino (any race)	8.3%	18.8%	+1.3 pts
White alone, not Hispanic	87.2%±0.5 pts	58.1%	−2.6 pts
Black or African American alone, not Hispanic	0.8%±0.4 pts	13.3%	no clear change
Asian alone, not Hispanic	0.3%±0.1 pts	5.9%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	2.9%±0.5 pts	3.4%	–
Some other race alone, not Hispanic	0.4%±0.4 pts	0.4%	–
Born outside the United States	3.5%±0.4 pts	14.7%	no clear change
Speak a language other than English at home (age 5+)	6.0%±0.6 pts	24.0%	–
Civilian veterans (age 18+)	6.7%±0.8 pts	4.8%	–
With a disability	16.2%±1.2 pts	12.1%	–
No health insurance coverage	6.0%±1.0 pts	6.9%	no clear change
High school graduate or higher (age 25+)	89.1%±1.1 pts	90.5%	–
Bachelor's degree or higher (age 25+)	18.2%±1.2 pts	37.8%	+2.3 pts
Graduate or professional degree (age 25+)	5.5%±0.7 pts	15.3%	–
Moved from another state in the past year	0.8%±0.3 pts	1.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Iroquois County earn?

Half of Iroquois County's 11,443 households earn less than $66,255 a year (±$2,456), against $83,390 in Illinois. In 2015-2019 it was $64,858 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.5% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Iroquois County	Illinois	Change since 2015-2019
Median household income	$66,255±$2,456	$83,390	no clear change
Mean household income	$84,074±$3,063	$115,638	–
Per capita income	$36,404±$1,277	$46,406	+$2,469
People below the poverty line	12.5%±1.5 pts	11.8%	no clear change
Children under 18 below the poverty line	14.9%±3.5 pts	15.1%	no clear change
Households receiving SNAP	14.2%±1.7 pts	13.8%	–
Households with a broadband subscription	86.5%±1.6 pts	90.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Iroquois County?

Owners occupy 80.0% of Iroquois County's occupied homes and renters 20.0%. The median owner-occupied home is valued at $137,800 by its owner (±$9,776). The median renter pays $799 a month including utilities, and 29.0% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Iroquois County	Illinois	Change since 2015-2019
Median home value (owner-occupied)	$137,800±$9,776	$263,300	+$11,285
Median gross rent	$799±$33	$1,274	no clear change
Renters paying 35% or more of income on rent	29.0%±5.7 pts	39.0%	no clear change
Median monthly owner costs, with a mortgage	$1,290±$63	$1,987	–
Owner-occupied homes	80.0%±1.8 pts	67.1%	+3.9 pts
Housing units	12,789±38	5,457,452	−704
Homeowner vacancy rate	1.6%±0.6 pts	1.0%	–
Rental vacancy rate	4.7%±2.2 pts	5.0%	–
Single-family detached homes	85.2%±1.8 pts	58.2%	–
Mobile homes	3.9%±1.3 pts	2.3%	–
Built 2020 or later	0.2%±0.2 pts	0.7%	–
Built 1939 or earlier	30.3%±2.2 pts	20.2%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Iroquois County building?

Builders took permits for 14 new housing units across Iroquois County in 2025 (14 single-family), 0.5 per 1,000 residents.

2019 23 units
2020 25 units
2021 26 units
2022 10 units
2023 13 units
2024 13 units
2025 14 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Iroquois County get to work?

81.1% of Iroquois County's workers drive alone and 7.6% work from home. The average trip to work takes 25.0 minutes. The unemployment rate in 2020-2024 averaged 4.5%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Iroquois County	Illinois	Change since 2015-2019
In the labor force (age 16+)	60.1%±1.8 pts	65.0%	–
Unemployment rate	4.5%±1.0 pts	5.8%	no clear change
Drove alone to work	81.1%±2.0 pts	65.9%	–
Carpooled	7.2%±1.3 pts	7.8%	–
Public transportation	0.2%±0.2 pts	5.8%	–
Walked	2.0%±0.6 pts	2.8%	–
Worked from home	7.6%±1.4 pts	15.9%	+2.9 pts
Mean travel time to work	25.0 min±1.4	27.8 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Iroquois County's census tracts?

Iroquois County is divided into 9 census tracts. Among those with a reliable estimate, median household income runs from $39,538 (Tract 9504) to $92,813 (Tract 9502).

Census tracts of Iroquois County, ACS 2020-2024 5-year estimates; sort by any column

Tract 950117075950100	Donovan (8%)	2,528	2,444±231	$70,099	$101,900	$795	15.5%
Tract 950217075950200	Clifton (17%)	3,586	3,516±194	$92,813	$207,700	$896	6.9%
Tract 950317075950300	Crescent City (9%)	3,179	2,924±252	$67,121	$166,300	$836	9.8%
Tract 950417075950400	Watseka (89%)	3,227	3,111±157	$39,538	$101,500	$771	26.2%
Tract 950517075950500	Sheldon (27%)	3,795	3,695±324	$63,667	$105,800	$824	16.4%
Tract 950617075950600	Gilman (39%)	3,490	3,414±270	$74,489	$116,700	$758	7.1%
Tract 950717075950700	Loda (10%)	2,752	2,836±234	$82,222	$190,600	$855	7.9%
Tract 950817075950800	Cissna Park (12%)	2,327	2,377±207	$77,000	$144,000	$776	9.0%
Tract 950917075950900	Milford (23%)	2,193	2,132±227	$59,561	$105,000	$790	14.6%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Iroquois County compare with Illinois's other counties?

Iroquois County's rank among Illinois's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	51st of 102
Growth 2020-2025	74th of 102
Residents per square mile	86th of 102
Median household income	54th of 102
Median home value	47th of 102
Median gross rent	58th of 102
Poverty rate	52nd of 102
Bachelor's degree or higher	81st of 102
Median age	21st of 102

Every county in Illinois

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Iroquois County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.