El Cajon, CA ZIP Codes
El Cajon, California has 4 ZIP codes: 3 for street addresses (, and ) and 1 for PO boxes ().
Your street decides which one you use.
Which El Cajon ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
El Cajon ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
92022 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: El Cajon city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All El Cajon ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 92019 | street delivery El Cajon |
| 92020 | street delivery El Cajon |
| 92021 | street delivery Bostonia |
| 92022 | PO boxes at the El Cajon post office El Cajon |
ZIP codes from nearby towns that reach into El Cajon
- 92071, mailing town Santee, covers 3 percent of El Cajon
Why your mail may say El Cajon when you live outside it
El Cajon ZIP codes also cover Harbison Canyon, Rancho San Diego and Crest, so a letter addressed to El Cajon can go to a home outside the city limits.
The reverse happens too: parts of El Cajon use 92071, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. San Diego County property records show which city you are in.
El Cajon ZIP code questions
What is the main ZIP code for El Cajon?
92019, the ZIP code of the main El Cajon post office at 401 W Lexington Ave.
Which El Cajon ZIP codes are for PO boxes only?
92022. Mail to it goes to boxes at the post office, not to street addresses.
What county is El Cajon in?
San Diego County.
ZIP codes for towns near El Cajon
More towns near El Cajon: Chula Vista, Poway, Escondido, Encinitas, San Marcos, Carlsbad, Vista, Oceanside, Fallbrook.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections