COUNTY REPORT CA

Inyo County, California

12 ZIP codes · Avg score 74/100 · Grade B · Updated

ZipCheckup grade for Inyo County: B.

This ZIP looks solid, with a few items worth a quick check.

Water systems in Inyo County serve 12 ZIP codes with few reported safety events.

How Inyo County Compares

Inyo County74/100
California avg76/100
National avg73/100

How Inyo County Compares

B
County Grade
74/100
Avg Safety Score
12
ZIP Codes
1
Water Systems

Inyo County scores 2 points below the California state average (76/100) and 1 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:

B
County Grade
74
Avg Safety Score
12
ZIP Codes
Best ZIP: 93546 (74/100)
Lowest ZIP: 93546 (74/100)
$279K
Median Home Value
$725
Avg Remediation (26% of home value)

ZIP Code Risk Map

Water Quality Map: Inyo County, California

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 12.7 (asthma 10.2%, diabetes 12.4%)

Estimated additional annual cost per homeowner: $1,083, driven primarily by energy_code_gap

79.4% of homes built before 1978 (lead paint era)

County Health Indicators vs National Average

Asthma 10.2% (national: 8.9%)
Diabetes 12.4% (national: 10.5%)
Obesity 28.2% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1967
Median Build Year
79.4%
Pre-1978 Housing
45/100
Infrastructure Stress Indicator
82%
ZIPs with High Infrastructure Stress
High
Lead Pipe Risk

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: $1,083

Energy Code Gap $594/yr
Water / Lead $275/yr
Wildfire $200/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

13,939 housing units in Inyo County

Pre-1940 5%
1940–1959 8%
1960–1979 43%
1980–1999 33%
2000+ 11%

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 Inyo County

$279K
Median Home Value
$725
Est. Remediation Cost
0.3%
of Home Value
Remediation as % of home value low burden

Remediation costs are relatively manageable for most homeowners in Inyo 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 Inyo County residents

Asthma 10.2% (US avg: 8.9%)
Diabetes 12.4% (US avg: 11%)
Obesity 28.2% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems serving Inyo County

1 community water system serving Inyo County.

Systems with the most violations in Inyo County

1 water system with recorded EPA violations.

All ZIP Codes in Inyo County

12 ZIP codes tracked in Inyo County.

# ZIP Code City Safety Score Grade Violations Home Value
1 93546 Mammoth Lakes 74 B 2 $619K
2 92328 Death Valley $78K
3 92384 Shoshone
4 92389 Tecopa
5 93513 Big Pine $289K
6 93515 Bishop
7 93522 Darwin
8 93526 Independence $268K
9 93530 Keeler
10 93542 Little Lake
11 93545 Lone Pine $193K
12 93549 Olancha $325K

Recommended Buyer Guides for Inyo County

Four sources - EPA, NSF, FEMA, CDC - drive the match.

Overview

Inyo County in California covers 12 tracked ZIP records with an average Home Safety Score of B (74/100) across 1 scored records.

1 of 1 ZIP code with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.

← Back to California Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Inyo County?
Inyo County receives a grade of B, indicating generally safe tap water across its 12 ZIP codes.
How many water systems serve Inyo County?
Inyo County is served by 1 public water system that supplies drinking water to residents across 12 ZIP codes.
What is the biggest environmental risk in Inyo County?
The primary environmental risk factor in Inyo County is energy_code_gap. This contributes to an estimated additional annual cost of $1,083 per homeowner.
How old are homes in Inyo County?
The median home build year in Inyo County is 1967. 79.4% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Inyo County compare to California?
Inyo County has an average Home Safety Score of 74/100 under model 4.0.0, which is below the California state average of 76/100.

How to cite this page

APA ZipCheckup. (2026). Inyo County, CA: HSS 74/100; 2 Violations. https://zipcheckup.com/county/california/inyo/
BibTeX
@misc{zipcheckup-county-california-inyo,
  author = {{ZipCheckup}},
  title  = {{Inyo County, CA: HSS 74/100; 2 Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/california/inyo/}
}

Page version: August 2026.

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