Fergus County, Montana
10 ZIP codes · Avg score 66/100 · Grade C · Updated
ZipCheckup grade for Fergus County: C.
A mixed picture - some signals here are worth your attention.
Tracking 10 ZIP codes in Fergus County reveals a mixed picture - tap water quality varies meaningfully by location.
How Fergus County Compares
How Fergus County Compares
Fergus County scores 1 points above the Montana state average (65/100) and 7 points below 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: Fergus County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.6 (asthma 11.1%, diabetes 11.4%)
Estimated additional annual cost per homeowner: $1,121, driven primarily by flood
65.5% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Fergus County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 4 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: $1,121
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,081 housing units in Fergus 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 Fergus County
Remediation costs are relatively manageable for most homeowners in Fergus 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 Fergus County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Fergus County
1 community water system serving Fergus County.
- C
Systems with the most violations in Fergus County
1 water system with recorded EPA violations.
- C
All ZIP Codes in Fergus County
10 ZIP codes tracked in Fergus County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59457 | Lewistown | 66 | C | 1 | $206K |
| 2 | 59032 | Grass Range | — | — | $123K | |
| 3 | 59418 | Buffalo | — | — | $563K | |
| 4 | 59424 | Coffee Creek | — | — | $265K | |
| 5 | 59430 | Denton | — | — | $211K | |
| 6 | 59441 | Forest Grove | — | — | $229K | |
| 7 | 59451 | Hilger | — | — | $120K | |
| 8 | 59464 | Moore | — | — | $242K | |
| 9 | 59471 | Roy | — | — | $150K | |
| 10 | 59489 | Winifred | — | — | — |
Recommended Buyer Guides for Fergus County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 65.5% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Fergus County, Montana
Overview
Fergus County in Montana covers 10 tracked ZIP records with an average Home Safety Score of C (66/100) across 1 scored records.
1 of 1 ZIP code 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 Montana 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.