COUNTY REPORT OH

Union County, Ohio

10 ZIP codes · Home Safety Score unavailable · 0 of 10 tracked ZIP records scored · Updated

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:

Unavailable
0 of 10 tracked ZIP records scored
10
ZIP Codes
$218K
Median Home Value
$1,950
Avg Remediation (89% of home value)

ZIP Code Risk Map

Water Quality Map: Union County, Ohio

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: 12.2 (asthma 10.4%, diabetes 10.2%)

Estimated additional annual cost per homeowner: $1,462, driven primarily by flood

72.4% of homes built before 1978 (lead paint era)

County Health Indicators vs National Average

Asthma 10.4% (national: 8.9%)
Diabetes 10.2% (national: 10.5%)
Obesity 39.8% (national: 32.4%)

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

Infrastructure Overview

1945
Median Build Year
72.4%
Pre-1978 Housing
47/100
Infrastructure Stress Indicator
60%
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: $1,462

Flood $520/yr
Energy Code Gap $480/yr
Sea Level Rise $400/yr

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

Housing Age Distribution

19,044 housing units in Union County

Pre-1940 21%
1940–1959 7%
1960–1979 17%
1980–1999 24%
2000+ 31%

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 Union County

$218K
Median Home Value
$1,950
Est. Remediation Cost
0.9%
of Home Value
Remediation as % of home value low burden

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

Asthma 10.4% (US avg: 8.9%)
Diabetes 10.2% (US avg: 11%)
Obesity 39.8% (US avg: 32.4%)

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

Water systems serving Union County

3 community water systems serving Union County.

Systems with the most violations in Union County

2 water systems with recorded EPA violations.

All ZIP Codes in Union County

10 ZIP codes tracked in Union County.

# ZIP Code City Safety Score Grade Violations Home Value
1 43007 Broadway $178K
2 43029 Irwin $242K
3 43036 Magnetic Springs $121K
4 43040 Marysville 1 $276K
5 43041 Marysville
6 43045 Milford Center 2 $232K
7 43067 Raymond $271K
8 43077 Unionville Center $178K
9 43344 Richwood 0 $218K
10 43358 West Mansfield $204K

Recommended Buyer Guides for Union County

Editorial-only picks, screened against the EPA detections on file.

Overview

Union County in Ohio covers 10 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.

2 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 Ohio Home Safety Profile

Data Sources

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

Frequently Asked Questions

How many water systems serve Union County?
Union County is served by 3 public water systems that supply drinking water to residents across 10 ZIP codes.
What is the biggest environmental risk in Union County?
The primary environmental risk factor in Union County is flood. This contributes to an estimated additional annual cost of $1,462 per homeowner.
How old are homes in Union County?
The median home build year in Union County is 1945. 72.4% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.

How to cite this page

APA ZipCheckup. (2026). Union County, Ohio Home Safety Profile. https://zipcheckup.com/county/ohio/union/
BibTeX
@misc{zipcheckup-county-ohio-union,
  author = {{ZipCheckup}},
  title  = {{Union County, Ohio Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/ohio/union/}
}

Page version: August 2026.

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