Custer County, Montana
4 ZIP codes · Avg score 65/100 · Grade C
ZipCheckup grade for Custer County: C.
A mixed picture - some signals here are worth your attention.
Custer County receives a C, the middle grade on the A-F scale, with 4 ZIP codes tracked.
How Custer County Compares
How Custer County Compares
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData
Key Risk Factors
Health risk index: 12.8 (asthma 11%, diabetes 10.5%)
Modeled additional annual cost estimate per homeowner: $1,500, largest modeled factor: Flood
77% 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: $1,500
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
5,900 housing units in Custer 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 Custer County
Modeled remediation costs in Custer 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 Custer County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Custer County ZIP codes
1 community water system mapped to Custer County ZIP codes; EPA may list more systems serving the county.
- C
Systems with the most violations in Custer County
1 water system with violations in EPA records.
- C
All ZIP Codes in Custer County
4 ZIP codes tracked in Custer County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59301 | Miles City | 65 | C | 6 (3 health) | $202K |
| 2 | 59336 | Ismay | — | — | $277K | |
| 3 | 59338 | Kinsey | — | — | $276K | |
| 4 | 59351 | Volborg | — | — | $113K |
Recommended Buyer Guides for Custer County
Each guide below is listed with the reason it appears.
- Best Lead Paint Test Kits — 77% of homes built before 1980
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Custer County, Montana
Overview
Custer County in Montana covers 4 tracked ZIP records with an average Home Safety Score of C (65/100) across 1 scored records.
1 of 1 ZIP code with a reported violation count in the available EPA record have recorded EPA violations. 3 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.