COUNTY REPORT IL

Iroquois County, Illinois

23 ZIP codes · Home Safety Score unavailable · 0 of 23 tracked ZIP records scored

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

Unavailable
0 of 23 tracked ZIP records scored
23
ZIP Codes
$105K
Median Home Value

ZIP Code Risk Map

Water Quality Map: Iroquois County, Illinois

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 15.1 (asthma 10.5%, diabetes 13.9%)

Modeled additional annual cost estimate per homeowner: $1,315, largest modeled factor: Flood

78% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10.5% (national: 8.9%)
Diabetes 13.9% (national: 10.5%)
Obesity 40.6% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1956
Median Build Year
78%
Pre-1980 Housing
53/100
Infrastructure Stress Indicator
100%
ZIPs with High Infrastructure Stress
High
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $1,315

Flood $700/yr
Energy Code Gap $540/yr
Sea Level Rise $400/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

12,286 housing units in Iroquois County

Pre-1940 30%
1940–1959 21%
1960–1979 27%
1980–1999 15%
2000+ 7%

Source: U.S. Census Bureau ACS B25034 (Year Structure Built).

Health Outcomes vs National Average

CDC PLACES data for Iroquois County residents

Asthma 10.5% (US avg: 8.9%)
Diabetes 13.9% (US avg: 11%)
Obesity 40.6% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Iroquois County ZIP codes

4 community water systems mapped to Iroquois County ZIP codes; EPA may list more systems serving the county.

Systems with the most violations in Iroquois County

3 water systems with violations in EPA records.

  • Onarga
    Serves ~1,409 people 5 violations
  • Gilman
    Serves ~1,793 people 4 violations
  • Watseka
    Serves ~5,500 people 2 violations

All ZIP Codes in Iroquois County

23 ZIP codes tracked in Iroquois County.

# ZIP Code City Safety Score Grade Violations Home Value
1 60911 Ashkum — — $152K
2 60912 Beaverville — — $86K
3 60918 Buckley — — 0 $98K
4 60924 Cissna Park — — $148K
5 60926 Claytonville — — $46K
6 60927 Clifton — — $194K
7 60928 Crescent City — — $114K
8 60930 Danforth — — $150K
9 60931 Donovan — — $112K
10 60938 Gilman — — 9 $123K
11 60939 Goodwine — — —
12 60945 Iroquois — — $95K
13 60948 Loda — — 0 $238K
14 60951 Martinton — — $123K
15 60953 Milford — — 2 $99K
16 60955 Onarga — — 9 $105K
17 60956 Papineau — — $87K
18 60966 Sheldon — — 2 $76K
19 60967 Stockland — — —
20 60968 Thawville — — 0 $102K
21 60970 Watseka — — 2 $121K
22 60973 Wellington — — $76K
23 60974 Woodland — — $91K

Recommended Buyer Guides for Iroquois County

These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.

Overview

Iroquois County in Illinois covers 23 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.

5 of 8 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.

← Back to Illinois Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

How many water systems serve Iroquois County?
We map 4 public water systems to 23 ZIP codes in our data for Iroquois County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Iroquois County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Iroquois County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,315 per homeowner; actual costs vary by home.
How old are homes in Iroquois County?
The median home build year in Iroquois County is 1956. 78% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.

How to cite this page

APA ZipCheckup. (2026). Iroquois County, Illinois Home Safety Profile. https://zipcheckup.com/county/illinois/iroquois/
BibTeX
@misc{zipcheckup-county-illinois-iroquois,
  author = {{ZipCheckup}},
  title  = {{Iroquois County, Illinois Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/illinois/iroquois/}
}

Page version: October 2026.

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