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City ZIP codes · California

Downey, CA ZIP Codes

4 ZIP codes use the postal name Downey, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 1 for PO boxes or a single organization. Median household income runs from $88,006 in 90241 to $101,904 in 90240 (Census Bureau, ACS 2020-2024). Downey's most populous ZIP code is 90241, with 45,319 people (ACS 2020-2024); 100% of its land is in the city of Downey.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Downey's ZIP codes?

90240: $102k median household income90241: $88k median household income90242: $89k median household income90241902429024090240: $102k median household income90241: $88k median household income90242: $89k median household income90241902429024090240: $102k median household income90241: $88k median household income90242: $89k median household income902419024290240
The 3 residential ZIP codes named Downey, 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 Downey's ZIP codes?

The highest median household income is in 90240 ($101,904), the lowest in 90241 ($88,006). Home values run from $761,000 in 90242 to $829,000 in 90241.

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

All 3 residential ZIP codes of Downey

Residential ZIP codes with the postal name Downey, CA, largest first (ACS 2020-2024); sort by any column
County
90241 Los Angeles County 45,319 9,292 $88k $829k
90242 Los Angeles County 40,767 9,027 $89k $761k
90240 Los Angeles County 24,853 8,260 $102k $816k

Download the 4 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 Downey

1 ZIP code named Downey has 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.

Downey, 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
90239Los Angeles County

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

Which counties do Downey's ZIP codes reach?

Downey's residential ZIP codes lie in Los Angeles County.

Which first three digits do Downey'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 Downey starts with 902.

Three-digit prefixes of Downey'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 Downey's
PrefixSectional centerHereAll codes
902 Los Angeles, CA (SCF 900) 4 50

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