COUNTY REPORT CA

Mono County, California

7 ZIP codes · Avg score 83/100 · Grade B · Updated

ZipCheckup grade for Mono County: B.

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

In current tracking cycles, Mono County - spanning 7 ZIP codes - records above-average water quality outcomes; the county's compliance history over recent years shows few departures from federal standards.

How Mono County Compares

Mono County83/100
California avg76/100
National avg73/100

How Mono County Compares

B
County Grade
83/100
Avg Safety Score
7
ZIP Codes
4
Water Systems

Mono County scores 7 points above the California state average (76/100) and 10 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
83
Avg Safety Score
7
ZIP Codes
Best ZIP: 93514 (83/100)
Lowest ZIP: 93514 (83/100)
$352K
Median Home Value
$1,343
Avg Remediation (38% of home value)

ZIP Code Risk Map

Water Quality Map: Mono 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: 11.8 (asthma 9.9%, diabetes 10.5%)

Estimated additional annual cost per homeowner: $1,509, driven primarily by flood

68.6% of homes built before 1978 (lead paint era)

County Health Indicators vs National Average

Asthma 9.9% (national: 8.9%)
Diabetes 10.5% (national: 10.5%)
Obesity 31.2% (national: 32.4%)

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

Infrastructure Overview

1974
Median Build Year
68.6%
Pre-1978 Housing
42/100
Infrastructure Stress Indicator
43%
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: $1,509

Flood $600/yr
Energy Code Gap $501/yr
Wildfire $300/yr

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

Housing Age Distribution

9,063 housing units in Mono County

Pre-1940 11%
1940–1959 11%
1960–1979 36%
1980–1999 31%
2000+ 10%

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 Mono County

$352K
Median Home Value
$1,343
Est. Remediation Cost
0.4%
of Home Value
Remediation as % of home value low burden

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

Asthma 9.9% (US avg: 8.9%)
Diabetes 10.5% (US avg: 11%)
Obesity 31.2% (US avg: 32.4%)

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

Water systems serving Mono County

4 community water systems serving Mono County.

Systems with the most violations in Mono County

2 water systems with recorded EPA violations.

All ZIP Codes in Mono County

7 ZIP codes tracked in Mono County.

# ZIP Code City Safety Score Grade Violations Home Value
1 93514 Bishop 83 B 2 $435K
2 93512 Benton $279K
3 93517 Bridgeport $321K
4 93529 June Lake $706K
5 93541 Lee Vining $334K
6 96107 Coleville $371K
7 96133 Topaz

Recommended Buyer Guides for Mono 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.

Overview

Mono County in California covers 7 tracked ZIP records with an average Home Safety Score of B (83/100) 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 Mono County?
Mono County receives a grade of B, indicating generally safe tap water across its 7 ZIP codes.
How many water systems serve Mono County?
Mono County is served by 4 public water systems that supply drinking water to residents across 7 ZIP codes.
What is the biggest environmental risk in Mono County?
The primary environmental risk factor in Mono County is flood. This contributes to an estimated additional annual cost of $1,509 per homeowner.
How old are homes in Mono County?
The median home build year in Mono County is 1974. 68.6% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Mono County compare to California?
Mono County has an average Home Safety Score of 83/100 under model 4.0.0, which is above the California state average of 76/100.

How to cite this page

APA ZipCheckup. (2026). Mono County, CA: HSS 83/100; 2 Violations. https://zipcheckup.com/county/california/mono/
BibTeX
@misc{zipcheckup-county-california-mono,
  author = {{ZipCheckup}},
  title  = {{Mono County, CA: HSS 83/100; 2 Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/california/mono/}
}

Page version: August 2026.

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