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San Diego ZIP codes: US ZIP code list for San Diego, California (CA)

Quick answer

San Diego, California has 12 US ZIP codes, running 92101 to 92154 inside San Diego County. Each carries the same 7.75% combined sales tax rate. ZIP boundaries are postal delivery routes, not tax boundaries — a code that crosses a city or district line can hold more than one rate, so destination-based sellers should validate by full street address.

ZIP codes
12Median covered metro: 12
Number span
5492101 to 92154
Sorting prefixes
921USPS sectional centers
Sales tax
7.75%Same in every listed code

San Diego ZIP code footprint

How San Diego's ZIP footprint compares with national norms.

12 ZIP codes are listed for San Diego, covering a population of 1,381,162. They span 54 numbers, 92101 through 92154. The median covered metro on this site lists 12 codes; San Diego ranks 2 of 94 by count. Large metros carry more codes because USPS splits a delivery area once carrier volume outgrows one route cluster, not because the city is geographically bigger.

All 12 codes share the 921 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to San Diego passes through one facility. The range runs 92101 to 92154.

ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; California redraws tax and municipal lines on a different schedule entirely. A San Diego mailing address does not prove an address sits inside San Diego city limits, and a single code can straddle the boundary.

ZIP codes in San Diego

All within San Diego County, California.

Source: California Department of Tax and Fee Administration rate tables · rates as published for 2026

Why ZIP-based rate lookup is unreliable

USPS redraws ZIP codes when carrier routes change. Tax jurisdictions move with annexations, county lines and voter-approved districts. The two never line up. In California, local jurisdictions set their own increments, so remote sellers should validate the full delivery address against the California Department of Tax and Fee Administration lookup at the time of sale.

Frequently asked questions

Common questions about this area.

How many ZIP codes does San Diego have?
12. They run from 92101 to 92154 across 1 sectional center prefix (921), spanning 54 numbers.
What is the first ZIP code in San Diego, CA?
92101 is the lowest-numbered code serving San Diego. Numbering runs roughly northeast to west nationally, so San Diego's 921 prefix reflects its position in the California sorting network, not its size.
Do all San Diego ZIP codes have the same sales tax rate?
Inside San Diego city limits, yes — 7.75% applies. A code that extends past the city line can carry a different rate on part of its territory. Validate by street address, not ZIP, when the sale is destination-based. Confirm current rates with your state revenue agency before filing.

San Diego sales tax breakdown and calculator

Other San Diego datasets on this site.

Statewide: California cities · California ZIP codes · California sales tax · California counties