COUNTY REPORT MI

Mason County, Michigan

7 ZIP codes · Avg score 99/100 · Grade A · Updated

ZipCheckup grade for Mason County: A.

No federal data flags a major home-safety concern for this ZIP.

Compared to state averages, Mason County scores well - its 7 ZIP codes sit above the baseline for tap water quality.

How Mason County Compares

Mason County99/100
Michigan avg85/100
National avg73/100

How Mason County Compares

A
County Grade
99/100
Avg Safety Score
7
ZIP Codes
5
Water Systems

Mason County scores 14 points above the Michigan state average (85/100) and 26 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:

A
County Grade
99
Avg Safety Score
7
ZIP Codes
Best ZIP: 49431 (99/100)
Lowest ZIP: 49431 (99/100)
$162K
Median Home Value
$1,600
Avg Remediation (99% of home value)

ZIP Code Risk Map

Water Quality Map: Mason County, Michigan

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: 15.5 (asthma 11.4%, diabetes 13.8%)

Estimated additional annual cost per homeowner: $863, driven primarily by flood

60.1% of homes built before 1978 (lead paint era)

County Health Indicators vs National Average

Asthma 11.4% (national: 8.9%)
Diabetes 13.8% (national: 10.5%)
Obesity 40.4% (national: 32.4%)

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

Infrastructure Overview

1975
Median Build Year
60.1%
Pre-1978 Housing
44/100
Infrastructure Stress Indicator
86%
ZIPs with High Infrastructure Stress
Low
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: $863

Flood $333/yr
Energy Code Gap $283/yr
Water / Lead $229/yr

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

Housing Age Distribution

17,065 housing units in Mason County

Pre-1940 20%
1940–1959 15%
1960–1979 23%
1980–1999 25%
2000+ 17%

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 Mason County

$162K
Median Home Value
$1,600
Est. Remediation Cost
1.0%
of Home Value
Remediation as % of home value low burden

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

Asthma 11.4% (US avg: 8.9%)
Diabetes 13.8% (US avg: 11%)
Obesity 40.4% (US avg: 32.4%)

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

Water systems serving Mason County

5 community water systems serving Mason County.

Systems with the most violations in Mason County

2 water systems with recorded EPA violations.

All ZIP Codes in Mason County

7 ZIP codes tracked in Mason County.

# ZIP Code City Safety Score Grade Violations Home Value
1 49431 Ludington 99 A 4 $219K
2 49402 Branch $162K
3 49405 Custer 1 $143K
4 49410 Fountain $162K
5 49411 Free Soil $221K
6 49454 Scottville 1 $174K
7 49458 Walhalla $56K

Recommended Buyer Guides for Mason County

If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.

Overview

Mason County in Michigan covers 7 tracked ZIP records with an average Home Safety Score of A (99/100) across 1 scored records.

3 of 3 ZIP codes 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 Michigan 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 Mason County?
Mason County receives a grade of A, indicating generally safe tap water across its 7 ZIP codes.
How many water systems serve Mason County?
Mason County is served by 5 public water systems that supply drinking water to residents across 7 ZIP codes.
What is the biggest environmental risk in Mason County?
The primary environmental risk factor in Mason County is flood. This contributes to an estimated additional annual cost of $863 per homeowner.
How old are homes in Mason County?
The median home build year in Mason County is 1975. 60.1% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Mason County compare to Michigan?
Mason County has an average Home Safety Score of 99/100 under model 4.0.0, which is above the Michigan state average of 85/100.

How to cite this page

APA ZipCheckup. (2026). Mason County, MI: HSS 99/100; 4 Violations. https://zipcheckup.com/county/michigan/mason/
BibTeX
@misc{zipcheckup-county-michigan-mason,
  author = {{ZipCheckup}},
  title  = {{Mason County, MI: HSS 99/100; 4 Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/michigan/mason/}
}

Page version: August 2026.

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