ZIP code · Arroyo Grande · California · United States
ZIP code 93420 — Arroyo Grande
ZIP code 93420 serves Arroyo Grande, California.
- Postal code
- 93420Single source Value from one source, not cross-checked.
- City
- Arroyo Grande
- County
- San Luis Obispo FIPS 06079
- State
- California
- Country
- United States
- Coordinates
- 35.1661, -120.4651 — precision precise (locality)
View on OpenStreetMap - Population
- 32,016 (ZCTA, ACS 5-year)
- Population density
- 162 / sq mi
- Land area
- 197.4 sq mi (511.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $106,718
- Per-capita income
- $49,633
- Median age
- 45.4
- Households
- 12,642
- Housing units
- 13,823
- Median home value
- $872,200
- Median gross rent
- $2,025 / month
- Congressional district
- CA-24 (119th Congress)
- USDA hardiness zone
- 9b (25 to 30 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
Tools: compare 93420 with another ZIP · ZIPs within 25 miles · distance from 93420
Map of ZIP code 93420
Climate — monthly normals
Warmest month Sep (avg high 80°F), coldest Dec (avg low 40°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 65 | 65 | 67 | 69 | 72 | 75 | 78 | 79 | 80 | 77 | 71 | 65 |
| Avg low °F | 41 | 42 | 45 | 46 | 48 | 51 | 54 | 55 | 53 | 50 | 45 | 40 |
| Precip in | 3.9 | 3.5 | 3.2 | 1.1 | 0.5 | 0.1 | 0.1 | 0.0 | 0.0 | 0.9 | 1.4 | 3.3 |
NOAA 1991–2020 climate normals from the nearest station: SAN LUIS OBISPO AP (11.1 mi) · NOAA NCEI
Places in ZIP 93420
- 15 schools
- 4 hospitals & clinics
- 5 doctors & dentists
- 2 pharmacies
- 5 supermarkets
- 53 restaurants & cafés
- 1 bars & pubs
- 23 parks
- 25 playgrounds
- 7 gyms & sports centres
- 1 libraries
- 2 post offices
- 15 places of worship
- 6 banks
- 5 gas stations
- 1 EV charging stations
- 4 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page