Lake County, Montana
11 ZIP codes · Avg score 63/100 · Grade C
ZipCheckup grade for Lake County: C.
A mixed picture - some signals here are worth your attention.
Within Lake County, 11 tracked ZIP codes add up to a middle-tier grade, with water records that should be checked system by system.
How Lake County Compares
How Lake County Compares
Lake County scores 2 points below the Montana state average (65/100) and 10 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
ZIP Code Risk Map
Water Quality Map: Lake County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14 (asthma 12%, diabetes 12.2%)
Modeled additional annual cost estimate per homeowner: $624, largest modeled factor: Wildfire
43% of homes built before 1980 (lead paint was banned for residential use in 1978)
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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $624
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,657 housing units in Lake 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 Lake County
Modeled remediation costs in Lake 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 Lake County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Lake County ZIP codes
5 community water systems mapped to Lake County ZIP codes; EPA may list more systems serving the county.
- C
- C
- C
- C
Systems with the most violations in Lake County
4 water systems with violations in EPA records.
- C
- C
- C
All ZIP Codes in Lake County
11 ZIP codes tracked in Lake County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59860 | Polson | 63 | C | 9 (2 health) | $386K |
| 2 | 59821 | Arlee | — | — | $380K | |
| 3 | 59824 | Charlo | — | — | 3 | $325K |
| 4 | 59855 | Pablo | — | — | $127K | |
| 5 | 59863 | Ravalli | — | — | — | |
| 6 | 59865 | Saint Ignatius | — | — | $310K | |
| 7 | 59910 | Big Arm | — | — | $606K | |
| 8 | 59914 | Dayton | — | — | $938K | |
| 9 | 59915 | Elmo | — | — | — | |
| 10 | 59929 | Proctor | — | — | $253K | |
| 11 | 59931 | Rollins | — | — | $1016K |
Recommended Buyer Guides for Lake County
Read the note next to each link: it gives the reason, such as a radon zone designation or housing age, that led to the recommendation.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Lake County, Montana
Overview
Lake County in Montana covers 11 tracked ZIP records with an average Home Safety Score of C (63/100) across 1 scored records.
2 of 2 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 2 health-based violations appear in the available health breakdown.
← 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.