National City, CA ZIP Codes
National City, California has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to National City covers nearby places too.
Where the 91950 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
91951 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: National City city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in National City
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?
National City PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 91950 | street delivery National City |
| 91951 | PO boxes at the National City post office National City |
ZIP codes from nearby towns that reach into National City
- 92136, mailing town San Diego, covers 4 percent of National City
Why your mail may say National City when you live outside it
A letter addressed to National City can go to a home outside the city limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of National City use 92136, 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.
National City ZIP code questions
What is the main ZIP code for National City?
91950, the ZIP code of the main National City post office at 710 E 16th St.
Which National City ZIP codes are for PO boxes only?
91951. Mail to it goes to boxes at the post office, not to street addresses.
What county is National City in?
San Diego County.
ZIP codes for towns near National City
More towns near National City: Santee, Poway, Encinitas, Escondido, 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