ZIP Code 93421 is located in Arroyo Grande California. Portions of 93421 are also in Oceano. 93421 is entirely within San Luis Obispo County. Regionally, it is located in Metro Los Angeles.
| ZIP Code Name | Arroyo Grande |
| Primary County | San Luis Obispo County |
| ZIP Code Type | PO Box |
| Area Code(s) | 805 / 820 |
| Current Time | PDT |
| Coordinates | 35.10290146,-120.59552002 |
| Cities/Towns in 93421 | |
| Region | Metro Los Angeles |
| Metropolitan/Micropolitan Stat Area | San Luis Obispo-Paso Robles, CA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 0.19177248 Square Miles |
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| California State Assembly Districts in 93421 |
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| Elementary Schools in 93421 | |
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