COUNTY REPORT IA

Clayton County, Iowa

17 ZIP codes · Home Safety Score unavailable · 0 of 17 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 17 tracked ZIP records scored
17
ZIP Codes
$142K
Median Home Value

ZIP Code Risk Map

Water Quality Map: Clayton 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: 15.6 (asthma 10%, diabetes 13.9%)

Modeled additional annual cost estimate per homeowner: $791, largest modeled factor: Flood

69% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10% (national: 8.9%)
Diabetes 13.9% (national: 10.5%)
Obesity 41% (national: 32.4%)

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

Infrastructure Overview

1961
Median Build Year
69%
Pre-1980 Housing
55/100
Infrastructure Stress Indicator
94%
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: $791

Flood $514/yr
Energy Code Gap $318/yr
Water / Lead $213/yr

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

Housing Age Distribution

9,701 housing units in Clayton County

Pre-1940 37%
1940–1959 12%
1960–1979 20%
1980–1999 16%
2000+ 15%

Source: U.S. Census Bureau ACS B25034 (Year Structure Built).

Health Outcomes vs National Average

CDC PLACES data for Clayton County residents

Asthma 10% (US avg: 8.9%)
Diabetes 13.9% (US avg: 11%)
Obesity 41% (US avg: 32.4%)

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

Water systems mapped to Clayton County ZIP codes

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

Systems with the most violations in Clayton County

1 water system with violations in EPA records.

All ZIP Codes in Clayton County

17 ZIP codes tracked in Clayton County.

# ZIP Code City Safety Score Grade Violations Home Value
1 52035 Colesburg — — $132K
2 52042 Edgewood — — $230K
3 52043 Elkader — — $145K
4 52044 Elkport — — —
5 52047 Farmersburg — — $101K
6 52048 Garber — — $82K
7 52049 Garnavillo — — 1 $168K
8 52052 Guttenberg — — 0 $189K
9 52053 Holy Cross — — 0 $282K
10 52066 North Buena Vista — — $83K
11 52072 Saint Olaf — — $114K
12 52076 Strawberry Point — — $140K
13 52077 Volga — — $81K
14 52156 Luana — — $217K
15 52157 Mc Gregor — — 1 $164K
16 52158 Marquette — — $133K
17 52159 Monona — — $149K

Recommended Buyer Guides for Clayton County

These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.

Overview

Clayton County in Iowa covers 17 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 4 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 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 Clayton County?
We map 4 public water systems to 17 ZIP codes in our data for Clayton County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Clayton County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Clayton County is flood. Across all modeled risk factors, the estimated average additional annual cost is $791 per homeowner; actual costs vary by home.
How old are homes in Clayton County?
The median home build year in Clayton County is 1961. 69% 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). Clayton County, Iowa Home Safety Profile. https://zipcheckup.com/county/iowa/clayton/
BibTeX
@misc{zipcheckup-county-iowa-clayton,
  author = {{ZipCheckup}},
  title  = {{Clayton County, Iowa Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/iowa/clayton/}
}

Page version: October 2026.

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