El Cajon, CA zip codes
El Cajon, California has 4 zip codes (3 residential, 1 PO box or single-organization). Most of it is in San Diego County. Together these zip codes are home to about 174K people.
Zip codes
4
Population
174K
All zips combined
Largest zip
92021
70,501 residents
Income range
$74K–$102K
Median by zip