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City ZIP codes · California

Santa Maria, CA ZIP Codes

5 ZIP codes use the postal name Santa Maria, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 2 for PO boxes or a single organization. Median household income runs from $75,257 in 93458 to $110,661 in 93455, 1.5 times as much (Census Bureau, ACS 2020-2024). Santa Maria's most populous ZIP code is 93458, with 59,148 people (ACS 2020-2024); 24% of its land is in the city of Santa Maria.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Santa Maria's ZIP codes?

93454: $82k median household income93455: $111k median household income93458: $75k median household income93454934559345893454: $82k median household income93455: $111k median household income93458: $75k median household income93454934559345893454: $82k median household income93455: $111k median household income93458: $75k median household income934549345593458
The 3 residential ZIP codes named Santa Maria, 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 Santa Maria's ZIP codes?

The highest median household income is in 93455 ($110,661), the lowest in 93458 ($75,257). Home values run from $511,800 in 93458 to $610,300 in 93455.

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

All 3 residential ZIP codes of Santa Maria

Residential ZIP codes with the postal name Santa Maria, CA, largest first (ACS 2020-2024); sort by any column
County
93458 Santa Barbara County 59,148 2,081 $75k $512k
93455 Santa Barbara County 44,611 377 $111k $610k
93454 Santa Barbara County 41,896 100 $82k $525k

Download the 5 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 Santa Maria

2 ZIP codes named Santa Maria 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.

Santa Maria, 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
93456Santa Barbara County
93457Santa Barbara County

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

Which counties do Santa Maria's ZIP codes reach?

Santa Maria's residential ZIP codes lie in 2 counties: Santa Barbara County (3 ZIP codes mainly there), San Luis Obispo County (part of a ZIP code).

Which places do Santa Maria's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Santa Maria's residential ZIP codes cover Santa Maria itself and 3 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Garey census-designated 93454
  • Orcutt census-designated 93455
  • Sisquoc census-designated 93454

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

Which first three digits do Santa Maria'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 Santa Maria starts with 934.

Three-digit prefixes of Santa Maria'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 Santa Maria's
PrefixSectional centerHereAll codes
934Santa Barbara, CA (SCF 931)553

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