COUNTY REPORT IA

Lyon County, Iowa

8 ZIP codes · Home Safety Score unavailable · 0 of 8 tracked ZIP records scored

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

Unavailable
0 of 8 tracked ZIP records scored
8
ZIP Codes
$192K
Median 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%)

Modeled additional annual cost estimate per homeowner: $658, largest modeled factor: Flood

67% of homes built before 1980 (lead paint was banned for residential use in 1978)

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
67%
Pre-1980 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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $658

Flood $600/yr
Energy Code Gap $270/yr
Water / Lead $175/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).

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 mapped to Lyon County ZIP codes

2 community water systems mapped to Lyon County ZIP codes; EPA may list more systems serving the 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

Up to five guides, picked by rule.

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?
We map 2 public water systems to 8 ZIP codes in our data for Lyon County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Lyon County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Lyon County is flood. Across all modeled risk factors, the estimated average additional annual cost is $658 per homeowner; actual costs vary by home.
How old are homes in Lyon County?
The median home build year in Lyon County is 1966. 67% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have 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: October 2026.

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