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City ZIP codes · California

Pomona, CA ZIP Codes

4 ZIP codes use the postal name Pomona, 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 $76,041 in 91768 to $81,991 in 91766 (Census Bureau, ACS 2020-2024). Pomona's most populous ZIP code is 91766, with 69,327 people (ACS 2020-2024); 96% of its land is in the city of Pomona.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Pomona's ZIP codes?

91766: $82k median household income91767: $79k median household income91768: $76k median household income91768917669176791766: $82k median household income91767: $79k median household income91768: $76k median household income91768917669176791766: $82k median household income91767: $79k median household income91768: $76k median household income917689176691767
The 3 residential ZIP codes named Pomona, 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 Pomona's ZIP codes?

The highest median household income is in 91766 ($81,991), the lowest in 91768 ($76,041). Home values run from $573,200 in 91768 to $599,200 in 91767.

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

All 3 residential ZIP codes of Pomona

Residential ZIP codes with the postal name Pomona, CA, largest first (ACS 2020-2024); sort by any column
County
91766 Los Angeles County 69,327 6,865 $82k $599k
91767 Los Angeles County 49,152 8,646 $79k $599k
91768 Los Angeles County 34,200 4,171 $76k $573k

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 Pomona

1 ZIP code named Pomona 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.

Pomona, 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
91769Los 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 Pomona's ZIP codes reach?

Pomona's residential ZIP codes lie in 2 counties: Los Angeles County (3 ZIP codes mainly there), San Bernardino County (part of a ZIP code).

Which first three digits do Pomona'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 Pomona starts with 917.

Three-digit prefixes of Pomona'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 Pomona's
PrefixSectional centerHereAll codes
917 Industry, CA (SCF 917) 4 64

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