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Iroquois County

county

Iroquois County is located in the northeastern part of Illinois, along the Indiana border. As of the 2020 Census, the population was 27,077, making it a largely rural county characterized by agriculture and small towns. The county seat is Watseka, which, like many of the county's communities, is proud of its agricultural heritage. Iroquois County is the only county in the United States named Iroquois, after the Iroquois River, which in turn was named for the Iroquois people. The economy of Iroquois County is centered on agriculture, business, and manufacturing. Key sectors include educational services, health care, social assistance, agriculture, and construction. Major transportation routes, including Interstate 57 and U.S. Route 24, facilitate the movement of goods and people. The Iroquois Economic Development Association (IEDA) actively works to expand economic opportunities and improve the quality of life for county residents. Iroquois County offers a blend of historical significance and natural attractions. The Iroquois County State Wildlife Area provides outdoor recreation opportunities, including hunting, hiking, and nature study. The county's history is preserved in local museums and historical societies, reflecting its evolution from Native American territory to a thriving agricultural region.

Iroquois County, Illinois

Overview
Classification
County
FIPS Code
17075
Country
United States
County
Iroquois County
Geography
Region
Northeast Illinois
Total Area
1,119 sq mi
Land Area
1,117 sq mi
Water Area
1.6 sq mi
Latitude
40.74
Longitude
-87.82
Climate
Summers are hot and humid; winters have icy winds across open fields.
Notable Features
Iroquois River · Sugar Creek · Iroquois County State Wildlife Area · Bonnie's Prairie · Hooper Branch Savanna · Loda Cemetery Prairie
Neighboring Areas
Kankakee County (North) · Newton County, Indiana (East) · Benton County, Indiana (East) · Vermilion County (South) · Ford County (West)
Demographics
Population (2020)
27,077
Est. Population (2024)
26,067
Median Age
44.4
Median Income
$62,439
Poverty Rate
3.5%
Owner-Occupied
78.5%
Racial & Ethnic Composition
The racial makeup of Iroquois County includes 87.8% White (Non-Hispanic), 3.78% Other (Hispanic), 2.15% Two Races Excluding Other, & Three or More Races (Non-Hispanic), 2.09% Two Races Including Other (Hispanic), and 1.76% White (Hispanic).
Education
Students
907
Student-Teacher Ratio
12:1
Graduation Rate
84%
School Districts
Central CUSD 4 · Cissna Park CUSD 6 · Crescent Iroquois CUSD 249 · Donovan CUSD 3 · Iroquois County CUSD 9 · Iroquois West CUSD 10 · Milford Area PSD 124
Recreation
Outdoor Access
Yes
Major Recreation Areas
Iroquois County State Wildlife Area · Bonnie's Prairie · Hooper Branch Savanna · Loda Cemetery Prairie · Iroquois Conservation Area
Parks & Trails
Hiking trails at Iroquois County State Wildlife Area · Snowmobile trails at Iroquois County State Wildlife Area
History
Founded
1833
Named After
Iroquois River, named for the Iroquois people
Historical Significance
Iroquois County is the only county in the United States bearing the name 'Iroquois'.
Key Events
Formed from Vermilion County · County seat established at the town of Iroquois in 1837 · County seat moved to Middleport in 1839 · County seat moved to Watseka in 1865