COUNTY REPORT IA

Hancock 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
$95K
Median Home Value

ZIP Code Risk Map

Water Quality Map: Hancock 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: 14.5 (asthma 9.8%, diabetes 12.6%)

Modeled additional annual cost estimate per homeowner: $539, largest modeled factor: Energy Code Gap

81% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 9.8% (national: 8.9%)
Diabetes 12.6% (national: 10.5%)
Obesity 42.2% (national: 32.4%)

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

Infrastructure Overview

1950
Median Build Year
81%
Pre-1980 Housing
59/100
Infrastructure Stress Indicator
100%
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: $539

Energy Code Gap $439/yr
Water / Lead $400/yr

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

Housing Age Distribution

4,662 housing units in Hancock County

Pre-1940 34%
1940–1959 22%
1960–1979 25%
1980–1999 11%
2000+ 8%

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

Health Outcomes vs National Average

CDC PLACES data for Hancock County residents

Asthma 9.8% (US avg: 8.9%)
Diabetes 12.6% (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 Hancock County ZIP codes

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

Systems with the most violations in Hancock County

1 water system with violations in EPA records.

All ZIP Codes in Hancock County

8 ZIP codes tracked in Hancock County.

# ZIP Code City Safety Score Grade Violations Home Value
1 50423 Britt — — 2 $110K
2 50430 Corwith — — $71K
3 50432 Crystal Lake — — $86K
4 50438 Garner — — 0 $177K
5 50439 Goodell — — $91K
6 50447 Kanawha — — $82K
7 50449 Klemme — — $99K
8 50484 Woden — — $111K

Recommended Buyer Guides for Hancock County

The guides listed here are chosen from this county's data, and the short note beside each one says why it made the list.

Overview

Hancock 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.

1 of 2 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 Hancock County?
We map 2 public water systems to 8 ZIP codes in our data for Hancock County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Hancock County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Hancock County is energy code gap. Across all modeled risk factors, the estimated average additional annual cost is $539 per homeowner; actual costs vary by home.
How old are homes in Hancock County?
The median home build year in Hancock County is 1950. 81% 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). Hancock County, Iowa Home Safety Profile. https://zipcheckup.com/county/iowa/hancock/
BibTeX
@misc{zipcheckup-county-iowa-hancock,
  author = {{ZipCheckup}},
  title  = {{Hancock County, Iowa Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/iowa/hancock/}
}

Page version: October 2026.

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