What city is ZIP code 91903?

91903 is a Alpine, California ZIP code.

What county is 91903 in?

ZIP code 91903 is in San Diego County, California.

What time zone is ZIP code 91903 in?

91903 is in the Pacific Time zone (America/Los_Angeles).

What area code is 91903?

Phone numbers in ZIP code 91903 use area code 619.

Can I use 91903 for a street address?

No. 91903 is only for PO Boxes. Street addresses in Alpine use 91901.

What ZIP codes are near 91903?

The nearest ZIP codes to 91903 are 91901 (Alpine, 0.8 miles), 92040 (Lakeside, 9 miles), 91935 (Jamul, 9.1 miles) and 92021 (El Cajon, 9.1 miles).

ZIP code 91903

Where is ZIP code 91903?

Alpine, California

San Diego County · PO Box only ZIP code

ZIP code 91903 belongs to Alpine, California in San Diego County. 91903 is a PO Box only ZIP code: it is used for post office boxes at the Alpine post office, not for street addresses. It is in the Pacific Time zone and uses area code 619. The closest ZIP codes are 91901 (Alpine, 0.8 mi southeast), 92040 (Lakeside, 9 mi west) and 91935 (Jamul, 9.1 mi southwest).

ZIP code	91903
Type	PO Box only (no street delivery)
Status	Active
City	Alpine
State	California (CA)
County	San Diego County
Time zone	Pacific Time · now
Area code	619
Coordinates	32.8351, -116.7664 map
3-digit prefix	919

The Census Bureau doesn’t publish population figures for po box only ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.

ZIP codes near 91903

ZIP code	City	Distance	Type
91901	Alpine, CA	0.8 mi SE	Standard
92040	Lakeside, CA	9 mi W	Standard
91935	Jamul, CA	9.1 mi SW	Standard
92021	El Cajon, CA	9.1 mi W	Standard
92019	El Cajon, CA	9.7 mi SW	Standard
91916	Descanso, CA	9.9 mi E	Standard
92022	El Cajon, CA	11.7 mi W	PO Box only
92020	El Cajon, CA	12 mi W	Standard
92072	Santee, CA	12 mi W	PO Box only
91931	Guatay, CA	12.1 mi E	PO Box only
92071	Santee, CA	12.8 mi W	Standard
91978	Spring Valley, CA	13.3 mi SW	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 91903 or measure the distance to another ZIP code.

How to address mail to 91903

JANE SMITH
PO BOX 123
ALPINE CA 91903

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (91903-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in Alpine, CA

91901

All Alpine ZIP codes with population and income →

Questions

What city is ZIP code 91903?: 91903 is a Alpine, California ZIP code.
What county is 91903 in?: ZIP code 91903 is in San Diego County, California.
What time zone is ZIP code 91903 in?: 91903 is in the Pacific Time zone (America/Los_Angeles).
What area code is 91903?: Phone numbers in ZIP code 91903 use area code 619.
Can I use 91903 for a street address?: No. 91903 is only for PO Boxes. Street addresses in Alpine use 91901.
What ZIP codes are near 91903?: The nearest ZIP codes to 91903 are 91901 (Alpine, 0.8 miles), 92040 (Lakeside, 9 miles), 91935 (Jamul, 9.1 miles) and 92021 (El Cajon, 9.1 miles).