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City ZIP codes · Massachusetts

Amherst, MA ZIP Codes

3 ZIP codes use the postal name Amherst, Massachusetts (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Amherst's most populous ZIP code is 01002, with 26,370 people (ACS 2020-2024); 0% of its land is in the city of Amherst.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Amherst's ZIP codes?

01002: $71k median household income01003: – median household income010020100301002: $71k median household income01003: – median household income010020100301002: $71k median household income01003: – median household income0100201003
The 2 residential ZIP codes named Amherst, 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 Amherst

Residential ZIP codes with the postal name Amherst, MA, largest first (ACS 2020-2024); sort by any column
County
01002 Hampshire County 26,370 495 $71k $481k
01003 Hampshire County 13,510 16,803 – –

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 Amherst

1 ZIP code named Amherst 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.

Amherst, MA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
01004Hampshire County

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

Which counties do Amherst's ZIP codes reach?

Amherst's residential ZIP codes lie in 2 counties: Hampshire County (2 ZIP codes mainly there), Franklin County (part of a ZIP code).

Which places do Amherst's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Amherst's residential ZIP codes cover 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 Amherst'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 Amherst starts with 010.

Three-digit prefixes of Amherst'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 Amherst's
PrefixSectional centerHereAll codes
010 Hartford, CT (SCF 060) 3 70

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