Home > CA > San Luis Obispo County > Arroyo Grande > Zip 93420

Zip Code 93420 — Arroyo Grande, CA

93420 is a ZIP Code associated with Arroyo Grande, CA, located within San Luis Obispo. The postal region supports an estimated population of 31,345 residents across Data Pending housing units, with a population density of 61.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (35.166820, -120.466170)

Data MetricLocal Statistic
Postal / Zip Code93420
Primary CityArroyo Grande
State / ProvinceCA
CountySan Luis Obispo
Total Population31,345
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density61.3 people/sq mi
TimezoneAmerica/Los_Angeles

How 93420 Compares

MetricZIP 93420San Luis Obispo CountyCA State Average
Population31,345276,43239,286,245
Median IncomeData PendingN/AN/A
Population Density61.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 93433Grover Beach9.2 mi12,600N/A
Zip 93444Nipomo9.3 mi21,611N/A
Zip 93401San Luis Obispo9.8 mi29,202N/A
Zip 93449Pismo Beach10.4 mi8,014N/A
Zip 93445Oceano12.7 mi6,857N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →