Arroyo Grande, CA ZIP codes
Arroyo Grande, California has 2 ZIP codes, including 1 PO Box ZIP. They are in San Luis Obispo County.
- Population in these ZIPs
- 31,345
- Avg. median income
- $110,600population-weighted
- Typical home value
- $1,037,700population-weighted
- Metro area
- San Luis Obispo-Paso Robles, CA
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Arroyo Grande, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 93420 | San Luis Obispo County | 31,345 | $110,553 | $1,037,700 |
| 93421 PO Box | San Luis Obispo County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Arroyo Grande
- Grover Beach 5 mi
- Pismo Beach 6 mi
- Oceano 7 mi
- Nipomo 8 mi
- San Luis Obispo 13 mi
- Avila Beach 15 mi
- Guadalupe 15 mi
- Santa Maria 17 mi
- Santa Margarita 19 mi
- Casmalia 19 mi
- Los Osos 20 mi
- Creston 23 mi
Frequently asked questions
What county is Arroyo Grande, California in?
Arroyo Grande ZIP codes are in San Luis Obispo County.
Which Arroyo Grande ZIP codes are PO Boxes?
93421 is a PO Box or single-organization ZIP code; it has no residential delivery area.