91903 ZIP Code — Alpine, CA
San Diego County, California
ZIP code 91903 is located in Alpine, California, within San Diego County. It covers approximately 0.00 square miles and serves a population of 0 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 619.
0
population
0.00
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
91903 ZIP code map
Cities in ZIP code 91903
Below are the cities the US Postal Service accepts for ZIP code 91903. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Alpine | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 06 |
| County FIPS | 073 |
| Geography | |
|---|---|
| Land area | 0.00 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 32.8352 |
| Longitude | -116.7659 |
| Timezone | Pacific (PT) |
| Area code | 619 |