Postal reference / United States
92121San Diego, California
ZIP code 92121 is a United States postal code for San Diego, California. Its county association is San Diego County. The map reference point is at 32.8919, -117.2035.
- State / territory
- California
- Recorded place name
- San Diego
- County association
- San Diego
- Estimated coordinate
- 32.8919, -117.2035
View on OpenStreetMap - ZIP prefix
- 921 · 80 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 12.539 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
Need the last four digits?
ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.
Find ZIP+4Explore California
Browse the other 2,592 ZIP codes recorded for California, sorted by code with place and county.
California directoryOther ZIP codes in San Diego, CA
San Diego has 76 ZIP codes in the reference dataset. The 36 not listed here are in the San Diego directory.
- 92101San Diego
- 92102San Diego
- 92103San Diego
- 92104San Diego
- 92105San Diego
- 92106San Diego
- 92107San Diego
- 92108San Diego
- 92109San Diego
- 92110San Diego
- 92111San Diego
- 92112San Diego
- 92113San Diego
- 92114San Diego
- 92115San Diego
- 92116San Diego
- 92117San Diego
- 92119San Diego
- 92120San Diego
- 92122San Diego
- 92123San Diego
- 92124San Diego
- 92126San Diego
- 92127San Diego
- 92128San Diego
- 92129San Diego
- 92130San Diego
- 92131San Diego
- 92132San Diego
- 92134San Diego
- 92135San Diego
- 92136San Diego
- 92137San Diego
- 92138San Diego
- 92139San Diego
- 92140San Diego
- 92142San Diego
- 92145San Diego
- 92147San Diego
- 92149San Diego
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 92161 | San Diego | CA | San Diego | 2.0 |
| 92122 | San Diego | CA | San Diego | 2.4 |
| 92126 | San Diego | CA | San Diego | 4.0 |
| 92037 | La Jolla | CA | San Diego | 4.3 |
| 92130 | San Diego | CA | San Diego | 4.6 |
| 92117 | San Diego | CA | San Diego | 4.7 |
| 92038 | La Jolla | CA | San Diego | 5.1 |
| 92039 | La Jolla | CA | San Diego | 5.1 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.
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