San Luis Obispo County, California
34 ZIP codes · Avg score 77/100 · Grade B
ZipCheckup grade for San Luis Obispo County: B.
This ZIP has a few items worth a quick check.
Across San Luis Obispo County, ZIP-level Home Safety Scores average out to a grade in the top two bands; the page tracks 34 ZIP codes in all.
How San Luis Obispo County Compares
How San Luis Obispo County Compares
San Luis Obispo County scores 1 points above the California state average (76/100) and 4 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
ZIP Code Risk Map
Water Quality Map: San Luis Obispo County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.3 (asthma 9.9%, diabetes 10%)
Modeled additional annual cost estimate per homeowner: $1,133, largest modeled factor: Flood
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
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: $1,133
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in San Luis Obispo County
Modeled remediation costs in San Luis Obispo 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 San Luis Obispo County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to San Luis Obispo County ZIP codes
8 community water systems mapped to San Luis Obispo County ZIP codes; EPA may list more systems serving the county.
- B
- C
- B
- B
- B
- B
Show all 8 water systems
- B
- B
33 water systems mapped to San Luis Obispo County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in San Luis Obispo County
5 water systems with violations in EPA records.
- B
- B
- C
- B
- B
All ZIP Codes in San Luis Obispo County
34 ZIP codes tracked in San Luis Obispo County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 93401 | San Luis Obispo | 83 | B | 1 (1 health) | $944K |
| 2 | 93405 | San Luis Obispo | 83 | B | 0 | $898K |
| 3 | 93409 | San Luis Obispo | 83 | B | 1 | — |
| 4 | 93428 | Cambria | 83 | B | 1 (1 health) | $870K |
| 5 | 93433 | Grover Beach | 83 | B | 0 | $692K |
| 6 | 93442 | Morro Bay | 83 | B | 1 (1 health) | $871K |
| 7 | 93444 | Nipomo | 83 | B | 13 (12 health) | $746K |
| 8 | 93465 | Templeton | 83 | B | 0 | $875K |
| 9 | 93449 | Pismo Beach | 81 | B | 4 (3 health) | $993K |
| 10 | 93445 | Oceano | 78 | B | 37 (13 health) | $538K |
| 11 | 93402 | Los Osos | 67 | C | 0 | $729K |
| 12 | 93422 | Atascadero | 67 | C | 0 | $692K |
| 13 | 93420 | Arroyo Grande | 62 | C | 37 (13 health) | $872K |
| 14 | 93446 | Paso Robles | 59 | C | 12 (12 health) | $661K |
| 15 | 93403 | San Luis Obispo | — | — | — | |
| 16 | 93406 | San Luis Obispo | — | — | — | |
| 17 | 93407 | San Luis Obispo | — | — | 0 | — |
| 18 | 93408 | San Luis Obispo | — | — | — | |
| 19 | 93410 | San Luis Obispo | — | — | 0 | — |
| 20 | 93412 | Los Osos | — | — | — | |
| 21 | 93421 | Arroyo Grande | — | — | — | |
| 22 | 93423 | Atascadero | — | — | — | |
| 23 | 93424 | Avila Beach | — | — | 0 | $1180K |
| 24 | 93430 | Cayucos | — | — | 0 | $965K |
| 25 | 93432 | Creston | — | — | 0 | $900K |
| 26 | 93435 | Harmony | — | — | — | |
| 27 | 93443 | Morro Bay | — | — | — | |
| 28 | 93447 | Paso Robles | — | — | — | |
| 29 | 93448 | Pismo Beach | — | — | — | |
| 30 | 93452 | San Simeon | — | — | $277K | |
| 31 | 93453 | Santa Margarita | — | — | 0 | $720K |
| 32 | 93461 | Shandon | — | — | $455K | |
| 33 | 93475 | Oceano | — | — | — | |
| 34 | 93483 | Grover Beach | — | — | — |
Recommended Buyer Guides for San Luis Obispo County
Which guides appear depends on what the county data show.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for San Luis Obispo County, California
Overview
San Luis Obispo County in California covers 34 tracked ZIP records with an average Home Safety Score of B (77/100) across 14 scored records.
9 of 20 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 31 health-based violations appear in the available health breakdown.
← Back to California Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.