El Cajon, California ZIP Codes
- ZIP records
3 - Sum of listed ZIP population estimates
173,694 - Counties represented
1 - Population range
45,351–70,501 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 92021 | El Cajon | San Diego | 70,501 |
| 2 | 92020 | El Cajon | San Diego | 57,842 |
| 3 | 92019 | El Cajon | San Diego | 45,351 |
Counties represented
All ZIP Codes in El Cajon
Browse all ZIP data for California
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.