Randolph County, Illinois
15 ZIP codes · Avg score 77/100 · Grade B · Updated
ZipCheckup grade for Randolph County: B.
This ZIP looks solid, with a few items worth a quick check.
In current tracking cycles, Randolph County - spanning 15 ZIP codes - records above-average water quality outcomes; the county's compliance history over recent years shows few departures from federal standards.
How Randolph County Compares
How Randolph County Compares
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 Last verified:
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.
Key Risk Factors
Health risk index: 14.5 (asthma 10.4%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $1,283, driven primarily by flood
66.1% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Randolph County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 8 violations. Past 5 years: 15 total (15 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,283
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
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
Remediation costs are relatively manageable for most homeowners in Randolph County, representing a small fraction of property value.
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
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Randolph County
7 community water systems serving Randolph County.
- B
- B
- B
- B
- C
- C
Show all 7 water systems
- B
Systems with the most violations in Randolph County
5 water systems with recorded EPA violations.
- C
- B
- B
- B
- 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
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- Best Lead Paint Test Kits — 66.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Randolph County, Illinois
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
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.