COUNTY REPORT IA

Lyon County, Iowa

8 ZIP codes · Home Safety Score unavailable · 0 of 8 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 8 tracked ZIP records scored
8
ZIP Codes
$192K
Median Home Value
$1,875
Avg Remediation (98% of home value)

ZIP Code Risk Map

Water Quality Map: Lyon County, Iowa

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: 14.2 (asthma 10.3%, diabetes 11.8%)

Estimated additional annual cost per homeowner: $1,101, driven primarily by flood

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

County Health Indicators vs National Average

Asthma 10.3% (national: 8.9%)
Diabetes 11.8% (national: 10.5%)
Obesity 42.2% (national: 32.4%)

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

Infrastructure Overview

1966
Median Build Year
72.4%
Pre-1978 Housing
52/100
Infrastructure Stress Indicator
88%
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: $1,101

Flood $600/yr
Water Infrastructure $275/yr
Energy Code Gap $270/yr

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

Housing Age Distribution

4,873 housing units in Lyon County

Pre-1940 25%
1940–1959 18%
1960–1979 24%
1980–1999 17%
2000+ 16%

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 Lyon County

$192K
Median Home Value
$1,875
Est. Remediation Cost
1.0%
of Home Value
Remediation as % of home value low burden

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

Asthma 10.3% (US avg: 8.9%)
Diabetes 11.8% (US avg: 11%)
Obesity 42.2% (US avg: 32.4%)

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

Water systems serving Lyon County

2 community water systems serving Lyon County.

All ZIP Codes in Lyon County

8 ZIP codes tracked in Lyon County.

# ZIP Code City Safety Score Grade Violations Home Value
1 51230 Alvord $190K
2 51235 Doon 0 $251K
3 51237 George $131K
4 51240 Inwood 0 $194K
5 51241 Larchwood 0 $270K
6 51242 Lester $185K
7 51243 Little Rock $88K
8 51246 Rock Rapids 0 $233K

Recommended Buyer Guides for Lyon County

Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.

Overview

Lyon County in Iowa covers 8 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.

The available EPA record reports 0 violations for 4 ZIP codes with a reported violation count.

← Back to Iowa 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 Lyon County?
Lyon County is served by 2 public water systems that supply drinking water to residents across 8 ZIP codes.
What is the biggest environmental risk in Lyon County?
The primary environmental risk factor in Lyon County is flood. This contributes to an estimated additional annual cost of $1,101 per homeowner.
How old are homes in Lyon County?
The median home build year in Lyon County is 1966. 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). Lyon County, Iowa Home Safety Profile. https://zipcheckup.com/county/iowa/lyon/
BibTeX
@misc{zipcheckup-county-iowa-lyon,
  author = {{ZipCheckup}},
  title  = {{Lyon County, Iowa Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/iowa/lyon/}
}

Page version: August 2026.

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