Bannock County, Idaho
12 ZIP codes · Avg score 78/100 · Grade B · Updated
ZipCheckup grade for Bannock County: B.
This ZIP looks solid, with a few items worth a quick check.
Covering 12 ZIP codes, Bannock County earns a high grade for tap water - most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How Bannock County Compares
How Bannock County Compares
Bannock County scores 6 points above the Idaho state average (72/100) 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: Bannock County, Idaho
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.8 (asthma 11.2%, diabetes 9.7%)
Estimated additional annual cost per homeowner: $1,988, driven primarily by wildfire
61.4% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Bannock County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 4 violations. Past 5 years: 8 total (8 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
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: $1,988
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
35,999 housing units in Bannock 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 Bannock County
Remediation costs are relatively manageable for most homeowners in Bannock 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 Bannock County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Bannock County
5 community water systems serving Bannock County.
- B
- C
- C
- C
- C
Systems with the most violations in Bannock County
4 water systems with recorded EPA violations.
- C
- B
- C
- C
All ZIP Codes in Bannock County
12 ZIP codes tracked in Bannock County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83201 | Pocatello | 82 | B | 3 (1 health) | $256K |
| 2 | 83204 | Pocatello | 82 | B | 3 (1 health) | $233K |
| 3 | 83209 | Pocatello | 82 | B | 3 (1 health) | — |
| 4 | 83202 | Pocatello | 67 | C | 22 (4 health) | $301K |
| 5 | 83205 | Pocatello | — | — | — | |
| 6 | 83206 | Pocatello | — | — | — | |
| 7 | 83214 | Arimo | — | — | $251K | |
| 8 | 83234 | Downey | — | — | $216K | |
| 9 | 83245 | Inkom | — | — | $301K | |
| 10 | 83246 | Lava Hot Springs | — | — | $359K | |
| 11 | 83250 | Mccammon | — | — | $296K | |
| 12 | 83281 | Swanlake | — | — | $304K |
Recommended Buyer Guides for Bannock County
Eight risk categories drive the selection - PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback - and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 61.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Bannock County, Idaho
Overview
Bannock County in Idaho covers 12 tracked ZIP records with an average Home Safety Score of B (78/100) across 4 scored records.
4 of 4 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 4 health-based violations appear in the available health breakdown.
← Back to Idaho 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.