COUNTY REPORT OK

Kay County, Oklahoma

9 ZIP codes · Avg score 74/100 · Grade B

ZipCheckup grade for Kay County: B.

This ZIP has a few items worth a quick check.

Across Kay County, ZIP-level Home Safety Scores average out to a grade in the top two bands; the page tracks 9 ZIP codes in all.

How Kay County Compares

Kay County74/100
Oklahoma avg86/100
National avg73/100

How Kay County Compares

B
County Grade
74/100
Avg Safety Score
9
ZIP Codes
11
Water Systems

Kay County scores 12 points below the Oklahoma state average (86/100) and 1 points above the national average (73/100).

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

B
County Grade
74
Avg Safety Score
9
ZIP Codes
Best ZIP: 74631 (87/100)
Lowest ZIP: 74604 (67/100)
$102K
Median Home Value
$663
Avg Remediation (0.65% of home value)

ZIP Code Risk Map

Water Quality Map: Kay County, Oklahoma

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 11.8%, diabetes 14.1%)

Modeled additional annual cost estimate per homeowner: $1,631, largest modeled factor: Flood

74% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 11.8% (national: 8.9%)
Diabetes 14.1% (national: 10.5%)
Obesity 42.6% (national: 32.4%)

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

Infrastructure Overview

1956
Median Build Year
74%
Pre-1980 Housing
56/100
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: $1,631

Flood $1,640/yr
Wildfire $300/yr
Energy Code Gap $248/yr

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

Housing Age Distribution

22,178 housing units in Kay County

Pre-1940 17%
1940–1959 28%
1960–1979 29%
1980–1999 18%
2000+ 7%

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 Kay County

$102K
Median Home Value
$663
Est. Remediation Cost
0.6%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Kay County can be compared with the median property value; actual costs vary by property.

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 Kay County residents

Asthma 11.8% (US avg: 8.9%)
Diabetes 14.1% (US avg: 11%)
Obesity 42.6% (US avg: 32.4%)

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

Water systems mapped to Kay County ZIP codes

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

Show all 8 water systems

11 water systems mapped to Kay County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Kay County

5 water systems with violations in EPA records.

All ZIP Codes in Kay County

9 ZIP codes tracked in Kay County.

# ZIP Code City Safety Score Grade Violations Home Value
1 74631 Blackwell 87 A 23 (14 health) $77K
2 74601 Ponca City 67 C 30 (22 health) $95K
3 74604 Ponca City 67 C 210 (55 health) $198K
4 74602 Ponca City — — —
5 74632 Braman — — 3 (3 health) —
6 74641 Kaw City — — 22 (18 health) $132K
7 74646 Nardin — — 23 (14 health) —
8 74647 Newkirk — — 146 (21 health) $110K
9 74653 Tonkawa — — 10 (4 health) $86K

Recommended Buyer Guides for Kay County

Nothing on this list means a problem exists in your own home: the matches are drawn from county- and ZIP-level records, so a guide shows up because of an area signal, and only testing at your tap describes a specific household.

Overview

Kay County in Oklahoma covers 9 tracked ZIP records with an average Home Safety Score of B (74/100) across 3 scored records.

8 of 8 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 69 health-based violations appear in the available health breakdown.

← Back to Oklahoma Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Kay County?
Kay County receives an average Home Safety grade of B from its scored ZIP records (9 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Kay County?
We map 11 public water systems to 9 ZIP codes in our data for Kay County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Kay County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Kay County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,631 per homeowner; actual costs vary by home.
How old are homes in Kay County?
The median home build year in Kay County is 1956. 74% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Kay County compare to Oklahoma?
Kay County has an average Home Safety Score of 74/100 under model 4.0.0, which is below the Oklahoma state average of 86/100.

How to cite this page

APA ZipCheckup. (2026). Kay County, OK: HSS 74/100; 69 Health Violations. https://zipcheckup.com/county/oklahoma/kay/
BibTeX
@misc{zipcheckup-county-oklahoma-kay,
  author = {{ZipCheckup}},
  title  = {{Kay County, OK: HSS 74/100; 69 Health Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/oklahoma/kay/}
}

Page version: October 2026.

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