ZIP Code 92021

92021 is one of California's ZIP codes, delivering to addresses in El Cajon, San Diego County.

City: El Cajon
County: San Diego County
State: California
Prefix: 920xx

Where this code sits

92021 is part of the 920xx range, the group of codes handled by one mail processing centre. El Cajon is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the El Cajon page.

El Cajon California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 92021 delivers to without sharing its boundary.

ZIP codes nearest 92021

The ZIP codes whose reference points sit closest to 92021.
ZIP code	Distance	Delivers to
ZIP code 92040	2.7 mi	Lakeside, CA
ZIP code 92019	2.8 mi	El Cajon, CA
ZIP code 92022	2.8 mi	El Cajon, CA
ZIP code 92020	3.1 mi	El Cajon, CA
ZIP code 92072	3.3 mi	Santee, CA
ZIP code 92071	4.3 mi	Santee, CA
ZIP code 91942	6.1 mi	La Mesa, CA
ZIP code 92119	6.1 mi	San Diego, CA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 92021, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 92021. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.