23 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 93446 | Paso Robles | 45,554 |
| 93422 | Atascadero | 33,002 |
| 93420 | Arroyo Grande | 31,345 |
| 93401 | San Luis Obispo | 29,202 |
| 93405 | San Luis Obispo | 25,002 |
| 93444 | Nipomo | 21,611 |
| 93402 | Los Osos | 14,197 |
| 93433 | Grover Beach | 12,600 |
| 93442 | Morro Bay | 11,571 |
| 93465 | Templeton | 11,039 |
| 93449 | Pismo Beach | 8,014 |
| 93410 | San Luis Obispo | 7,396 |
| 93445 | Oceano | 6,857 |
| 93428 | Cambria | 6,399 |
| 93430 | Cayucos | 3,125 |
| 93409 | San Luis Obispo | 2,952 |
| 93453 | Santa Margarita | 2,344 |
| 93461 | Shandon | 1,548 |
| 93432 | Creston | 1,142 |
| 93424 | Avila Beach | 962 |
| 93407 | San Luis Obispo | 347 |
| 93452 | San Simeon | 217 |
| 93408 | San Luis Obispo | 6 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 23 ZCTAs in San Luis Obispo County, California (US Census).