Noble County, Oklahoma
5 ZIP codes · Avg score 79/100 · Grade B · Updated 2026-07-19
ZipCheckup grade for Noble: B.
This ZIP looks solid, with a few items worth a quick check.
Within Noble County, all 5 tracked ZIP codes show above-average drinking water safety - violations are infrequent and typically minor.
How Noble County Compares
How Noble County Compares
Noble County scores 0 points above the Oklahoma state average (79/100) and 11 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Noble County, Oklahoma
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.2 (asthma 11.5%, diabetes 13.3%)
Estimated additional annual cost per homeowner: $1,224, driven primarily by water_infra
Infrastructure: 0.536% avg pipe failure probability, 80% of ZIPs at high risk
68.2% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Noble County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 18 violations. Past 5 years: 46 total (46 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
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,224
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,596 housing units in Noble County
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 Noble County
Remediation costs are relatively manageable for most homeowners in Noble 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 Noble County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Noble County
8 community water systems serving Noble County.
- C
- C
- C
- C
- C
- C
Show all 8 water systems
- B
- C
14 total water systems serve Noble County.
Systems with the most violations in Noble County
3 water systems with recorded EPA violations.
- C
- C
- C
All ZIP Codes in Noble County
5 ZIP codes tracked in Noble County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 73061 | Morrison | 98 | A | 12 (1 health) | $230K |
| 2 | 74644 | Marland | 92 | A | 13 (3 health) | $83K |
| 3 | 74630 | Billings | 73 | B | 36 (1 health) | $102K |
| 4 | 73077 | Perry | 68 | C | 106 (16 health) | $129K |
| 5 | 74651 | Red Rock | 66 | C | 69 (16 health) | $259K |
Recommended Buyer Guides for Noble County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance - guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 68.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Noble County, Oklahoma
Overview
Noble County in Oklahoma covers 5 ZIP codes with an average Home Safety Score of B (79/100).
5 of 5 ZIP codes have recorded EPA violations. 37 health-based violations have been documented.
← Back to Oklahoma water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.