Park County, Montana
7 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-06-03
Across Park County, EPA compliance data for 7 ZIP codes sits at a moderate level — not alarming, but not uniformly clean either.
How Park County Compares
How Park County Compares
Park County scores 8 points above the Montana state average (55/100) and 5 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Park County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.8 (asthma 10.7%, diabetes 10.5%)
Estimated additional annual cost per homeowner: $1,163, driven primarily by flood
Infrastructure: 0.354% avg pipe failure probability, 14% of ZIPs at high risk
52.9% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,163
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,877 housing units in Park 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 Park County
Remediation costs are relatively manageable for most homeowners in Park 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 Park County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Park County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Cooke City Water District | 300 | 6 |
| 2 | Golden Age Village | 180 | 5 |
| 3 | Avalon Subdivision | 135 | 5 |
| 4 | Clyde Park Water Department | 300 | 4 |
| 5 | Gardiner Park Company Water District | 700 | 1 |
15 total water systems serve Park County.
All ZIP Codes in Park County
7 ZIP codes tracked in Park County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59030 | Gardiner | 70 | B | 1 | $540K |
| 2 | 59018 | Clyde Park | 68 | C | 4 | $331K |
| 3 | 59027 | Emigrant | 68 | C | 5 | $427K |
| 4 | 59020 | Cooke City | 63 | C | 6 | $363K |
| 5 | 59065 | Pray | 62 | C | 0 | $794K |
| 6 | 59047 | Livingston | 60 | C | 0 | $420K |
| 7 | 59081 | Silver Gate | 53 | D | 0 | $563K |
Recommended Buyer Guides for Park County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 52.9% 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 Park County, Montana
Overview
Park County in Montana covers 7 ZIP codes with an average Home Safety Score of C (63/100).
4 of 7 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Montana water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.