COUNTY REPORT KS

Jefferson County, Kansas

6 ZIP codes · Home Safety Score unavailable · 0 of 6 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 6 tracked ZIP records scored
6
ZIP Codes
$186K
Median Home Value
$1,767
Avg Remediation (95% of home value)

ZIP Code Risk Map

Water Quality Map: Jefferson County, Kansas

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: 13.1 (asthma 9.9%, diabetes 11.3%)

Estimated additional annual cost per homeowner: $925, driven primarily by flood

66.2% of homes built before 1978 (lead paint era)

Violation History (2021–2022)

→ Stable trend

EPA violation counts by year across Jefferson County water systems. Health-based shown in red, total in blue.

2021
1 (1 health)
2022
1 (1 health)

Peak year: 2021 with 1 violation. Past 5 years: 2 total (2 health-based).

Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.

County Health Indicators vs National Average

Asthma 9.9% (national: 8.9%)
Diabetes 11.3% (national: 10.5%)
Obesity 34.7% (national: 32.4%)

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

Infrastructure Overview

1971
Median Build Year
66.2%
Pre-1978 Housing
39/100
Infrastructure Stress Indicator
33%
ZIPs with High Infrastructure Stress
Low
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: $925

Flood $600/yr
Water Infrastructure $192/yr
Water / Lead $183/yr

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

Housing Age Distribution

5,200 housing units in Jefferson County

Pre-1940 15%
1940–1959 10%
1960–1979 29%
1980–1999 25%
2000+ 21%

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 Jefferson County

$186K
Median Home Value
$1,767
Est. Remediation Cost
0.9%
of Home Value
Remediation as % of home value low burden

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

Asthma 9.9% (US avg: 8.9%)
Diabetes 11.3% (US avg: 11%)
Obesity 34.7% (US avg: 32.4%)

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

Water systems serving Jefferson County

8 community water systems serving Jefferson County.

Show all 8 water systems

11 total water systems serve Jefferson County.

Systems with the most violations in Jefferson County

4 water systems with recorded EPA violations.

All ZIP Codes in Jefferson County

6 ZIP codes tracked in Jefferson County.

# ZIP Code City Safety Score Grade Violations Home Value
1 66060 Nortonville 0 $130K
2 66066 Oskaloosa 10 $215K
3 66070 Ozawkie 9 $208K
4 66073 Perry 12 $189K
5 66429 Grantville 2 $165K
6 66512 Meriden 2 $183K

Recommended Buyer Guides for Jefferson County

Designed to find the guide that fits the county, not the other way around - the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.

Overview

Jefferson County in Kansas covers 6 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.

5 of 6 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 Kansas 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 Jefferson County?
Jefferson County is served by 11 public water systems that supply drinking water to residents across 6 ZIP codes.
What is the biggest environmental risk in Jefferson County?
The primary environmental risk factor in Jefferson County is flood. This contributes to an estimated additional annual cost of $925 per homeowner.
How old are homes in Jefferson County?
The median home build year in Jefferson County is 1971. 66.2% 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). Jefferson County, Kansas Home Safety Profile. https://zipcheckup.com/county/kansas/jefferson/
BibTeX
@misc{zipcheckup-county-kansas-jefferson,
  author = {{ZipCheckup}},
  title  = {{Jefferson County, Kansas Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/kansas/jefferson/}
}

Page version: August 2026.

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