COUNTY REPORT IL

Randolph County, Illinois

15 ZIP codes · Avg score 77/100 · Grade B

ZipCheckup grade for Randolph County: B.

This ZIP has a few items worth a quick check.

In Randolph County, where this site follows 15 ZIP codes, the composite grade sits in the upper band.

How Randolph County Compares

Randolph County77/100
Illinois avg68/100
National avg73/100

How Randolph County Compares

B
County Grade
77/100
Avg Safety Score
15
ZIP Codes
7
Water Systems

Randolph County scores 9 points above the Illinois state average (68/100) and 4 points above the national average (73/100).

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

B
County Grade
77
Avg Safety Score
15
ZIP Codes
Best ZIP: 62217 (83/100)
Lowest ZIP: 62272 (67/100)
$136K
Median Home Value
$600
Avg Remediation (0.44% of home value)

ZIP Code Risk Map

Water Quality Map: Randolph 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: 14.5 (asthma 10.4%, diabetes 12.9%)

Modeled additional annual cost estimate per homeowner: $983, largest modeled factor: Flood

60% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10.4% (national: 8.9%)
Diabetes 12.9% (national: 10.5%)
Obesity 38.8% (national: 32.4%)

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

Infrastructure Overview

1976
Median Build Year
60%
Pre-1980 Housing
44/100
Infrastructure Stress Indicator
73%
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: $983

Flood $700/yr
Energy Code Gap $450/yr
Water / Lead $161/yr

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

Housing Age Distribution

14,732 housing units in Randolph County

Pre-1940 17%
1940–1959 17%
1960–1979 26%
1980–1999 24%
2000+ 15%

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

Water Safety Affordability

How much it costs to fix water issues relative to home values in Randolph County

$136K
Median Home Value
$600
Est. Remediation Cost
0.4%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Randolph County can be compared with the median property value; actual costs vary by property.

Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.

Health Outcomes vs National Average

CDC PLACES data for Randolph County residents

Asthma 10.4% (US avg: 8.9%)
Diabetes 12.9% (US avg: 11%)
Obesity 38.8% (US avg: 32.4%)

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

Water systems mapped to Randolph County ZIP codes

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

  • Waterloo
    Serves ~10,190 people 29 violations
    B
  • Chester
    Serves ~8,407 people 2 violations
    B
  • Sparta
    Serves ~4,395 people 10 violations
    B
  • Red Bud
    Serves ~3,804 people 7 violations
    B
  • Steeleville
    Serves ~1,960 people 45 violations
    C
  • Percy
    Serves ~961 people 6 violations
    C
Show all 7 water systems
  • Tilden
    Serves ~740 people 2 violations
    B

Systems with the most violations in Randolph County

5 water systems with violations in EPA records.

  • Steeleville
    Serves ~1,960 people 45 violations
    C
  • Waterloo
    Serves ~10,190 people 29 violations
    B
  • Sparta
    Serves ~4,395 people 10 violations
    B
  • Red Bud
    Serves ~3,804 people 7 violations
    B
  • Percy
    Serves ~961 people 6 violations
    C

All ZIP Codes in Randolph County

15 ZIP codes tracked in Randolph County.

# ZIP Code City Safety Score Grade Violations Home Value
1 62217 Baldwin 83 B 2 $138K
2 62233 Chester 83 B 2 $112K
3 62242 Evansville 83 B 2 $111K
4 62286 Sparta 76 B 12 (2 health) $149K
5 62278 Red Bud 71 B 36 (2 health) $182K
6 62272 Percy 67 C 51 (8 health) $104K
7 62237 Coulterville — — $133K
8 62241 Ellis Grove — — $136K
9 62259 Menard — — —
10 62261 Modoc — — —
11 62277 Prairie Du Rocher — — $126K
12 62280 Rockwood — — 2 $234K
13 62288 Steeleville — — 51 (8 health) $167K
14 62292 Tilden — — 2 $72K
15 62297 Walsh — — $302K

Recommended Buyer Guides for Randolph County

Which guides appear depends on what the county data show.

Overview

Randolph County in Illinois covers 15 tracked ZIP records with an average Home Safety Score of B (77/100) across 6 scored records.

9 of 9 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 12 health-based violations appear in the available health breakdown.

← 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

Is water safe in Randolph County?
Randolph County receives an average Home Safety grade of B from its scored ZIP records (15 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Randolph County?
We map 7 public water systems to 15 ZIP codes in our data for Randolph County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Randolph County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Randolph County is flood. Across all modeled risk factors, the estimated average additional annual cost is $983 per homeowner; actual costs vary by home.
How old are homes in Randolph County?
The median home build year in Randolph County is 1976. 60% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Randolph County compare to Illinois?
Randolph County has an average Home Safety Score of 77/100 under model 4.0.0, which is at or above the Illinois state average of 68/100.

How to cite this page

APA ZipCheckup. (2026). Randolph County, IL: HSS 77/100; PFAS Found in Water. https://zipcheckup.com/county/illinois/randolph/
BibTeX
@misc{zipcheckup-county-illinois-randolph,
  author = {{ZipCheckup}},
  title  = {{Randolph County, IL: HSS 77/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/illinois/randolph/}
}

Page version: October 2026.

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