ZIP code · San Marino · California · United States
ZIP code 91108 — San Marino
ZIP code 91108 serves San Marino, California.
- Postal code
- 91108Single source Value from one source, not cross-checked.
- City
- San Marino
- County
- Los Angeles FIPS 06037
- State
- California
- Country
- United States
- Coordinates
- 34.1207, -118.1117 — precision precise (locality)
View on OpenStreetMap - Population
- 12,464 (ZCTA, ACS 5-year)
- Population density
- 3,291 / sq mi
- Land area
- 3.8 sq mi (9.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $186,023
- Per-capita income
- $91,431
- Median age
- 45.6
- Households
- 3,934
- Housing units
- 4,490
- Median home value
- $2,000,000+
- Median gross rent
- $3,500+ / month
- Congressional district
- CA-28 (119th Congress)
- USDA hardiness zone
- 10a (30 to 35 °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)
- Area code
- 626 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 91108 with another ZIP · ZIPs within 25 miles · distance from 91108
Map of ZIP code 91108
Climate — monthly normals
Warmest month Aug (avg high 88°F), coldest Dec (avg low 45°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 69 | 68 | 71 | 74 | 76 | 81 | 86 | 88 | 87 | 81 | 74 | 68 |
| Avg low °F | 46 | 47 | 51 | 53 | 58 | 62 | 65 | 66 | 64 | 57 | 51 | 45 |
| Precip in | 3.6 | 4.2 | 2.5 | 0.6 | 0.5 | 0.1 | 0.0 | 0.0 | 0.1 | 0.6 | 0.9 | 2.4 |
NOAA 1991–2020 climate normals from the nearest station: SAN GABRIEL FIRE DEPT (2.6 mi) · NOAA NCEI
Places in ZIP 91108
- 5 schools
- 1 hospitals & clinics
- 9 doctors & dentists
- 2 pharmacies
- 19 restaurants & cafés
- 6 parks
- 3 playgrounds
- 8 gyms & sports centres
- 2 libraries
- 2 post offices
- 4 places of worship
- 12 banks
- 1 gas stations
- 2 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