COUNTY REPORT OK

Carter County, Oklahoma

17 ZIP codes · Avg score 90/100 · Grade A · Updated

ZipCheckup grade for Carter County: A.

No federal data flags a major home-safety concern for this ZIP.

Homeowners across Carter County's 17 ZIP codes live with water safety scores that generally beat state and national averages.

How Carter County Compares

Carter County90/100
Oklahoma avg86/100
National avg73/100

How Carter County Compares

A
County Grade
90/100
Avg Safety Score
17
ZIP Codes
9
Water Systems

Carter County scores 4 points above the Oklahoma state average (86/100) and 17 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 Last verified:

A
County Grade
90
Avg Safety Score
17
ZIP Codes
Best ZIP: 73458 (98/100)
Lowest ZIP: 73438 (83/100)
$108K
Median Home Value
$1,485
Avg Remediation (138% of home value)

ZIP Code Risk Map

Water Quality Map: Carter 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: 14.9 (asthma 11.7%, diabetes 13.7%)

Estimated additional annual cost per homeowner: $1,098, driven primarily by flood

62% of homes built before 1978 (lead paint era)

Violation History (2021–2025)

↑ Worsening trend

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

2021
5 (5 health)
2022
17 (17 health)
2023
24 (24 health)
2024
31 (31 health)
2025
23 (23 health)

Peak year: 2024 with 31 violations. Past 5 years: 100 total (100 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.

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

County Health Indicators vs National Average

Asthma 11.7% (national: 8.9%)
Diabetes 13.7% (national: 10.5%)
Obesity 39.7% (national: 32.4%)

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

Infrastructure Overview

1976
Median Build Year
62%
Pre-1978 Housing
53/100
Infrastructure Stress Indicator
94%
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: $1,098

Flood $667/yr
Water Infrastructure $312/yr
Wildfire $300/yr

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

Housing Age Distribution

22,687 housing units in Carter County

Pre-1940 9%
1940–1959 22%
1960–1979 23%
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 Carter County

$108K
Median Home Value
$1,485
Est. Remediation Cost
1.4%
of Home Value
Remediation as % of home value low burden

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

Asthma 11.7% (US avg: 8.9%)
Diabetes 13.7% (US avg: 11%)
Obesity 39.7% (US avg: 32.4%)

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

Water systems serving Carter County

8 community water systems serving Carter County.

Show all 8 water systems

9 total water systems serve Carter County.

Systems with the most violations in Carter County

5 water systems with recorded EPA violations.

All ZIP Codes in Carter County

17 ZIP codes tracked in Carter County.

# ZIP Code City Safety Score Grade Violations Home Value
1 73458 Springer 98 A 41 (41 health) $174K
2 73443 Lone Grove 93 A 52 (42 health) $181K
3 73456 Ringling 91 A 16 (10 health) $102K
4 73463 Wilson 90 A 55 (49 health) $108K
5 73401 Ardmore 87 A 95 (84 health) $175K
6 73438 Healdton 83 B 26 (22 health) $71K
7 73402 Ardmore
8 73403 Ardmore
9 73435 Fox $110K
10 73436 Gene Autry $76K
11 73437 Graham
12 73444 Hennepin $125K
13 73451 Ardmore
14 73454 Ardmore
15 73481 Ratliff City 26 (22 health) $70K
16 73487 Tatums $73K
17 73488 Tussy

Recommended Buyer Guides for Carter County

Strictly editorial - no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.

Overview

Carter County in Oklahoma covers 17 tracked ZIP records with an average Home Safety Score of A (90/100) across 6 scored records.

7 of 7 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 98 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 Carter County?
Carter County receives a grade of A, indicating generally safe tap water across its 17 ZIP codes.
How many water systems serve Carter County?
Carter County is served by 9 public water systems that supply drinking water to residents across 17 ZIP codes.
What is the biggest environmental risk in Carter County?
The primary environmental risk factor in Carter County is flood. This contributes to an estimated additional annual cost of $1,098 per homeowner.
How old are homes in Carter County?
The median home build year in Carter County is 1976. 62% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Carter County compare to Oklahoma?
Carter County has an average Home Safety Score of 90/100 under model 4.0.0, which is above the Oklahoma state average of 86/100.

How to cite this page

APA ZipCheckup. (2026). Carter County, OK: HSS 90/100; 98 Health Violations. https://zipcheckup.com/county/oklahoma/carter/
BibTeX
@misc{zipcheckup-county-oklahoma-carter,
  author = {{ZipCheckup}},
  title  = {{Carter County, OK: HSS 90/100; 98 Health Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/oklahoma/carter/}
}

Page version: August 2026.

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