Yellowstone County, Montana
23 ZIP codes · Avg score 78/100 · Grade B
ZipCheckup grade for Yellowstone County: B.
This ZIP has a few items worth a quick check.
Yellowstone County earns an A or B, the top two of ZipCheckup's five grades, based on the average composite Home Safety Score of its scored ZIP codes. That composite can draw on drinking water records, radon zones, PFAS monitoring and air quality data, so a strong grade summarizes several sources and is not a reading from anyone's tap. Scores also vary from one ZIP code to another, and the 23 ZIP reports listed for the county show where each one stands.
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
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%)
Modeled additional annual cost estimate per homeowner: $913, largest modeled factor: 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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $913
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
Modeled remediation costs in Yellowstone 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 Yellowstone County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Yellowstone County ZIP codes
8 community water systems mapped to Yellowstone County ZIP codes; EPA may list more systems serving the county.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
- B
9 water systems mapped to Yellowstone County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in Yellowstone County
5 water systems with violations in EPA records.
- 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
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.
- Water Filters Certified for PFAS Reduction — 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.