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City ZIP codes · California

Duarte, CA ZIP Codes

3 ZIP codes use the postal name Duarte, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Duarte's most populous ZIP code is 91010, with 27,589 people (ACS 2020-2024); 57% of its land is in the city of Duarte.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Duarte's ZIP codes?

91008: $164k median household income91010: $103k median household income910109100891008: $164k median household income91010: $103k median household income910109100891008: $164k median household income91010: $103k median household income9101091008
The 2 residential ZIP codes named Duarte, 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 2 residential ZIP codes of Duarte

Residential ZIP codes with the postal name Duarte, CA, largest first (ACS 2020-2024); sort by any column
County
91010 Los Angeles County 27,589 4,290 $103k $757k
91008 Los Angeles County 743 386 $164k $1.81M

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).

PO Box and single-organization ZIP codes in Duarte

1 ZIP code named Duarte 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.

Duarte, 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
91009Los 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 Duarte's ZIP codes reach?

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

Which places do Duarte's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Duarte's residential ZIP codes cover Duarte itself and 4 other places, 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 Duarte'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 Duarte starts with 910.

Three-digit prefixes of Duarte'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 Duarte's
PrefixSectional centerHereAll codes
910 Santa Clarita, CA (SCF 913) 3 25

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