Park County, Wyoming
7 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-07-19
ZipCheckup grade for Park: C.
A mixed picture - some signals here are worth your attention.
Across Park County's 7 ZIP codes, water safety results are uneven - a portion of systems carry active or recent violations, while others meet standards without issues.
How Park County Compares
How Park County Compares
Park County scores 5 points above the Wyoming state average (55/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Park County, Wyoming
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 9.8%, diabetes 11.7%)
Estimated additional annual cost per homeowner: $884, driven primarily by flood
Infrastructure: 0.383% avg pipe failure probability, 43% of ZIPs at high risk
60.3% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Park County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 2 violations. Past 5 years: 3 total (3 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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $884
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
14,927 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 serving Park County
8 community water systems serving Park County.
- D
- B
- D
- C
- B
- C
Show all 8 water systems
- C
- C
10 total water systems serve Park County.
Systems with the most violations in Park County
4 water systems with recorded EPA violations.
- C
- D
- C
- C
All ZIP Codes in Park County
7 ZIP codes tracked in Park County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 82435 | Powell | 70 | B | 0 | $318K |
| 2 | 82190 | Yellowstone National Park | 66 | C | 1 | — |
| 3 | 82414 | Cody | 64 | C | 2 | $421K |
| 4 | 82423 | Frannie | 64 | C | 1 | $114K |
| 5 | 82433 | Meeteetse | 61 | C | 4 (1 health) | $252K |
| 6 | 82450 | Wapiti | 53 | D | 0 | — |
| 7 | 82440 | Ralston | 40 | D | 0 | — |
Recommended Buyer Guides for Park County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 60.3% 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, Wyoming
Overview
Park County in Wyoming covers 7 ZIP codes with an average Home Safety Score of C (60/100).
4 of 7 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← Back to Wyoming 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.