COUNTY REPORT MI

Mason County, Michigan

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

ZipCheckup grade for Mason County: A.

Checked records flag no major concern; missing data is unknown.

ZipCheckup rates Mason County in the top two of its five grades; 7 ZIP codes are tracked there.

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

A
County Grade
99
Avg Safety Score
7
ZIP Codes
Best ZIP: 49431 (99/100)
Lowest ZIP: 49431 (99/100)
$162K
Median 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%)

Modeled additional annual cost estimate per homeowner: $504, largest modeled factor: Flood

58% of homes built before 1980 (lead paint was banned for residential use in 1978)

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
58%
Pre-1980 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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $504

Flood $333/yr
Energy Code Gap $283/yr
Water / Lead $183/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).

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 mapped to Mason County ZIP codes

5 community water systems mapped to Mason County ZIP codes; EPA may list more systems serving the county.

Systems with the most violations in Mason County

2 water systems with violations in EPA records.

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

Each guide below is listed with the reason it appears.

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 an average Home Safety grade of A from its scored ZIP records (7 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Mason County?
We map 5 public water systems to 7 ZIP codes in our data for Mason County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Mason County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Mason County is flood. Across all modeled risk factors, the estimated average additional annual cost is $504 per homeowner; actual costs vary by home.
How old are homes in Mason County?
The median home build year in Mason County is 1975. 58% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have 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 at or 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: October 2026.

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