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2026 Rankings
Mendocino County, California Home Safety Rankings - 27 ZIPs
Explore rankings under Home Safety Score model 4.0.0. Only ZIPs with all four required inputs are ranked; missing evidence is not imputed or reweighted.
Mendocino County, California (California) includes 27 tracked ZIP codes and 11 mapped community water systems; confirm service for a specific address. Below are the water quality rankings for metro ZIPs with all required inputs.
Average Home Safety Grade: A (93/100)
| Grade | ZIP Codes | % |
|---|---|---|
| A | 4 | 80% |
| B | 1 | 20% |
| C | 0 | 0% |
| D | 0 | 0% |
| F | 0 | 0% |
Top 10 ZIP Codes by Home Safety Score
| Rank | ZIP | City | Score | Grade |
|---|---|---|---|---|
| 1 | 95470 | Redwood Valley | 100 | A |
| 2 | 95490 | Willits | 97 | A |
| 3 | 95437 | Fort Bragg | 96 | A |
| 4 | 95497 | The Sea Ranch | 95 | A |
| 5 | 95482 | Ukiah | 78 | B |
10 Riskiest ZIP Codes
| Rank | ZIP | City | Score | Grade | Risk Factor |
|---|---|---|---|---|---|
| 1 | 95482 | Ukiah | 78 | B | 5 violations |
| 2 | 95497 | The Sea Ranch | 95 | A | 4 violations |
| 3 | 95437 | Fort Bragg | 96 | A | 2 violation(s) |
| 4 | 95490 | Willits | 97 | A | 5 violations |
| 5 | 95470 | Redwood Valley | 100 | A | — |
Most Common Contaminant Violations
| Contaminant | Violations | ZIPs Affected |
|---|---|---|
| Stage 2 DBP Rule | 6 | 3 |
| Stage 1 DBP Rule | 4 | 3 |
| Consumer Confidence Report Rule | 4 | 4 |
| Total Coliform | 2 | 2 |
| Total Trihalomethanes (TTHM) | 1 | 1 |
| Haloacetic Acids (HAA5) | 1 | 1 |
Lead Risk
- 0 of 11 ZIP codes with known status exceed EPA lead action level
- 15% of housing built before 1950
- 35% of housing built before 1970
Cities in This Metro
- Albion, CA — 1 ZIP code
- Boonville, CA — 1 ZIP code
- Branscomb, CA — 1 ZIP code
- Calpella, CA — 1 ZIP code
- Caspar, CA — 1 ZIP code
- Comptche, CA — 1 ZIP code
- Covelo, CA — 1 ZIP code
- Dos Rios, CA — 1 ZIP code
- Elk, CA — 1 ZIP code
- Fort Bragg, CA — 1 ZIP code
- Gualala, CA — 1 ZIP code
- Laytonville, CA — 1 ZIP code
- Little River, CA — 1 ZIP code
- Manchester, CA — 1 ZIP code
- Mendocino, CA — 1 ZIP code
- Navarro, CA — 1 ZIP code
- Philo, CA — 1 ZIP code
- Point Arena, CA — 1 ZIP code
- Potter Valley, CA — 1 ZIP code
- Redwood Valley, CA — 1 ZIP code
- Talmage, CA — 1 ZIP code
- Ukiah, CA — 1 ZIP code
- Westport, CA — 1 ZIP code
- Willits, CA — 1 ZIP code
- Yorkville, CA — 1 ZIP code
- The Sea Ranch, CA — 1 ZIP code
- Leggett, CA — 1 ZIP code
All 27 ZIP Codes Ranked
View complete ranking
| Rank | ZIP | City | Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 95470 | Redwood Valley | 100 | A | 0 |
| 2 | 95490 | Willits | 97 | A | 5 |
| 3 | 95437 | Fort Bragg | 96 | A | 2 |
| 4 | 95497 | The Sea Ranch | 95 | A | 4 |
| 5 | 95482 | Ukiah | 78 | B | 5 |
| 6 | 95410 | Albion | — | — | — |
| 7 | 95415 | Boonville | — | — | 2 |
| 8 | 95417 | Branscomb | — | — | — |
| 9 | 95420 | Caspar | — | — | — |
| 10 | 95427 | Comptche | — | — | — |
| 11 | 95428 | Covelo | — | — | — |
| 12 | 95429 | Dos Rios | — | — | — |
| 13 | 95432 | Elk | — | — | — |
| 14 | 95445 | Gualala | — | — | 0 |
| 15 | 95454 | Laytonville | — | — | — |
| 16 | 95456 | Little River | — | — | — |
| 17 | 95459 | Manchester | — | — | 0 |
| 18 | 95460 | Mendocino | — | — | — |
| 19 | 95466 | Philo | — | — | — |
| 20 | 95468 | Point Arena | — | — | 0 |
| 21 | 95469 | Potter Valley | — | — | 0 |
| 22 | 95488 | Westport | — | — | — |
| 23 | 95494 | Yorkville | — | — | 0 |
| 24 | 95585 | Leggett | — | — | — |
Data Sources
- Water quality: EPA SDWIS
- Housing: U.S. Census Bureau American Community Survey
- Flood: FEMA NFIP
- Flood scope: historical NFIP claim records and claim-rated-zone evidence; this is not current property-map coverage.
Reporting periods vary by source; the page metadata identifies this materialization.
Methodology
Model 4.0.0 averages SDWIS water compliance and UCMR5 PFAS within drinking water, then averages drinking water, county radon, and annual AQI as three equal domains. All four inputs are required. Score methodology → · Rankings methodology →
Model 4.0.0 averages SDWIS water compliance and UCMR5 PFAS within drinking water, then averages drinking water, county radon, and annual AQI as three equal domains. All four inputs are required. Score methodology → · Rankings methodology →
Disclaimer: Scores are based on EPA SDWIS reported data and are not a guarantee of current water safety. Water quality can change. For the most current information, contact your local water utility or request a Consumer Confidence Report.
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How to cite this page
APA
ZipCheckup. (2026). Mendocino County, California Home Safety Rankings - 27 ZIPs. https://zipcheckup.com/rankings/metro/mendocino-california/
BibTeX
@misc{zipcheckup-rankings-metro-mendocino-california,
author = {{ZipCheckup}},
title = {{Mendocino County, California Home Safety Rankings - 27 ZIPs}},
year = {2026},
url = {https://zipcheckup.com/rankings/metro/mendocino-california/}
}
Page version: October 2026.
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