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City ZIP codes · California

San Leandro, CA ZIP Codes

3 ZIP codes use the postal name San Leandro, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026), all residential. Median household income runs from $94,084 in 94578 to $108,772 in 94577 (Census Bureau, ACS 2020-2024). San Leandro's most populous ZIP code is 94577, with 46,317 people (ACS 2020-2024); 100% of its land is in the city of San Leandro.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are San Leandro's ZIP codes?

94577: $109k median household income94578: $94k median household income94579: $99k median household income94577945789457994577: $109k median household income94578: $94k median household income94579: $99k median household income94577945789457994577: $109k median household income94578: $94k median household income94579: $99k median household income945779457894579
The 3 residential ZIP codes named San Leandro, 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 Leandro's ZIP codes?

The highest median household income is in 94577 ($108,772), the lowest in 94578 ($94,084). Home values run from $823,000 in 94578 to $856,100 in 94577.

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

All 3 residential ZIP codes of San Leandro

Residential ZIP codes with the postal name San Leandro, CA, largest first (ACS 2020-2024); sort by any column
County
94577 Alameda County 46,317 5,708 $109k $856k
94578 Alameda County 41,769 9,162 $94k $823k
94579 Alameda County 20,017 6,399 $99k $850k

Download the 3 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).

Which counties do San Leandro's ZIP codes reach?

San Leandro's residential ZIP codes lie in Alameda County.

Which places do San Leandro's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, San Leandro's residential ZIP codes cover San Leandro itself and 2 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Ashland census-designated 94578
  • Castro Valley census-designated 94578

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

Which first three digits do San Leandro'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 Leandro starts with 945.

Three-digit prefixes of San Leandro'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 Leandro's
PrefixSectional centerHereAll codes
945 Oakland, CA (SCF 945) 3 93

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