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City ZIP codes · California

Monterey, CA ZIP Codes

4 ZIP codes use the postal name Monterey, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 1 for PO boxes or a single organization. Monterey's most populous ZIP code is 93940, with 30,605 people (ACS 2020-2024); 23% of its land is in the city of Monterey.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Monterey's ZIP codes?

93940: $106k median household income93943: – median household income93944: – median household income9394093940: $106k median household income93943: – median household income93944: – median household income9394093940: $106k median household income93943: – median household income93944: – median household income93940
The 3 residential ZIP codes named Monterey, 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).

All 3 residential ZIP codes of Monterey

Residential ZIP codes with the postal name Monterey, CA, largest first (ACS 2020-2024); sort by any column
County
93940 Monterey County 30,605 871 $106k $1.1M
93944 Monterey County 2,665 7,908 – –
93943 Monterey County 10 49 – –

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 Monterey

1 ZIP code named Monterey 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.

Monterey, 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
93942Monterey County

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

Which counties do Monterey's ZIP codes reach?

Monterey's residential ZIP codes lie in Monterey County.

Which places do Monterey's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Monterey's residential ZIP codes cover Monterey itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

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

Which first three digits do Monterey'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 Monterey starts with 939.

Three-digit prefixes of Monterey'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 Monterey's
PrefixSectional centerHereAll codes
939 San Jose, CA (SCF 950) 4 30

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