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City ZIP codes · California

San Luis Obispo, CA ZIP Codes

8 ZIP codes use the postal name San Luis Obispo, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 6 residential and 2 for PO boxes or a single organization. San Luis Obispo's most populous ZIP code is 93401, with 29,202 people (ACS 2020-2024); 11% of its land is in the city of San Luis Obispo.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are San Luis Obispo's ZIP codes?

93401: $97k median household income93405: $60k median household income93407: – median household income93408: – median household income93409: – median household income93410: – median household income9340593401934079340993401: $97k median household income93405: $60k median household income93407: – median household income93408: – median household income93409: – median household income93410: – median household income93405934019340793401: $97k median household income93405: $60k median household income93407: – median household income93408: – median household income93409: – median household income93410: – median household income9340593401
The 6 residential ZIP codes named San Luis Obispo, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it.<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are San Luis Obispo's ZIP codes?

Home values run from $949,700 in 93405 to $973,000 in 93401.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 6 residential ZIP codes of San Luis Obispo

Residential ZIP codes with the postal name San Luis Obispo, CA, largest first (ACS 2020-2024); sort by any column
County
93401 San Luis Obispo County 29,202 455 $97k $973k
93405 San Luis Obispo County 25,002 279 $60k $950k
93410 San Luis Obispo County 7,396 16,963 – –
93409 San Luis Obispo County 2,952 7,380 – –
93407 San Luis Obispo County 347 408 – –
93408 San Luis Obispo County 6 273 – –

Download the 8 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in San Luis Obispo

2 ZIP codes named San Luis Obispo have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

San Luis Obispo, CA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
93403San Luis Obispo County
93406San Luis Obispo County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do San Luis Obispo's ZIP codes reach?

San Luis Obispo's residential ZIP codes lie in San Luis Obispo County.

Which places do San Luis Obispo's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, San Luis Obispo's residential ZIP codes cover San Luis Obispo itself and 4 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • California Polytechnic State University census-designated 93407, 93410
  • Avila Beach census-designated 93405
  • Edna census-designated 93401
  • Los Ranchos census-designated 93401

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do San Luis Obispo's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of San Luis Obispo starts with 934.

Three-digit prefixes of San Luis Obispo's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are San Luis Obispo's
PrefixSectional centerHereAll codes
934Santa Barbara, CA (SCF 931)853

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.