Yellowstone County, Montana
23 ZIP codes · Avg score 78/100 · Grade B · Updated
ZipCheckup grade for Yellowstone County: B.
This ZIP looks solid, with a few items worth a quick check.
Recent water monitoring in Yellowstone County shows 23 ZIP codes with consistently safe results.
How Yellowstone County Compares
How Yellowstone County Compares
Yellowstone County scores 13 points above the Montana state average (65/100) and 5 points above 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: Yellowstone County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.3 (asthma 10.7%, diabetes 9.5%)
Estimated additional annual cost per homeowner: $1,290, driven primarily by flood
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: $1,290
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Yellowstone County
Remediation costs are relatively manageable for most homeowners in Yellowstone 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 Yellowstone County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Yellowstone County
8 community water systems serving Yellowstone County.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
- B
9 total water systems serve Yellowstone County.
Systems with the most violations in Yellowstone County
5 water systems with recorded EPA violations.
- B
- B
- B
- B
- B
All ZIP Codes in Yellowstone County
23 ZIP codes tracked in Yellowstone County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59102 | Billings | 83 | B | 4 | $307K |
| 2 | 59044 | Laurel | 82 | B | 3 (1 health) | $317K |
| 3 | 59105 | Billings | 80 | B | 8 | $315K |
| 4 | 59106 | Billings | 73 | B | 34 (2 health) | $483K |
| 5 | 59101 | Billings | 72 | B | 38 (2 health) | $243K |
| 6 | 59002 | Acton | — | — | $430K | |
| 7 | 59006 | Ballantine | — | — | $241K | |
| 8 | 59015 | Broadview | — | — | $229K | |
| 9 | 59024 | Custer | — | — | $191K | |
| 10 | 59037 | Huntley | — | — | 0 | $326K |
| 11 | 59064 | Pompeys Pillar | — | — | $277K | |
| 12 | 59079 | Shepherd | — | — | $350K | |
| 13 | 59088 | Worden | — | — | $226K | |
| 14 | 59103 | Billings | — | — | — | |
| 15 | 59104 | Billings | — | — | — | |
| 16 | 59107 | Billings | — | — | — | |
| 17 | 59108 | Billings | — | — | — | |
| 18 | 59111 | Billings | — | — | — | |
| 19 | 59112 | Billings | — | — | — | |
| 20 | 59114 | Billings | — | — | — | |
| 21 | 59115 | Billings | — | — | — | |
| 22 | 59116 | Billings | — | — | — | |
| 23 | 59117 | Billings | — | — | — |
Recommended Buyer Guides for Yellowstone County
Designed to find the guide that fits the county, not the other way around - the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Water Filters for PFAS — PFAS detected in 2 ZIP codes
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Yellowstone County, Montana
Overview
Yellowstone County in Montana covers 23 tracked ZIP records with an average Home Safety Score of B (78/100) across 5 scored records.
5 of 6 ZIP codes 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.