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

Zip Code 93420 — Arroyo Grande, CA

ZIP Code 93420 is associated with Arroyo Grande, CA, in San Luis Obispo County. The listed population estimate is 31,345; estimated density is 61.3 people per square mile. Among records with population estimates, it ranks #3 of 23 in San Luis Obispo County and #582 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 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
Population Density61.3 people/sq mi
TimezoneAmerica/Los_Angeles

How 93420 Compares

MetricZIP 93420San Luis Obispo County recordsCA records
Population estimate31,345276,432 (sum)39,286,245 (sum)
Population Density61.3 /sq mi----
County population rank#3 of 23----
State population rank#582 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

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

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 →