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City ZIP codes · Maine

Portland, ME ZIP Codes

9 ZIP codes use the postal name Portland, Maine (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 5 for PO boxes or a single organization. Median household income runs from $63,880 in 04101 to $89,796 in 04103, 1.4 times as much (Census Bureau, ACS 2020-2024). Portland's most populous ZIP code is 04103, with 32,024 people (ACS 2020-2024); 100% of its land is in the city of Portland.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Portland's ZIP codes?

04101: $64k median household income04102: $83k median household income04103: $90k median household income04109: – median household income0410304102041090410104101: $64k median household income04102: $83k median household income04103: $90k median household income04109: – median household income0410304102041090410104101: $64k median household income04102: $83k median household income04103: $90k median household income04109: – median household income04103041020410904101
The 4 residential ZIP codes named Portland, 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 Portland's ZIP codes?

The highest median household income is in 04103 ($89,796), the lowest in 04101 ($63,880). Home values run from $459,500 in 04103 to $617,600 in 04101.

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

All 4 residential ZIP codes of Portland

Residential ZIP codes with the postal name Portland, ME, largest first (ACS 2020-2024); sort by any column
County
04103 Cumberland County 32,024 3,131 $90k $460k
04101 Cumberland County 18,431 9,088 $64k $618k
04102 Cumberland County 17,267 2,881 $83k $504k
04109 Cumberland County 213 172 – $755k

Download the 9 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 Portland

5 ZIP codes named Portland have 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.

Portland, ME: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
04104Cumberland County
04112Cumberland County
04122Cumberland County
04123Cumberland County
04124Cumberland County

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

Which counties do Portland's ZIP codes reach?

Portland's residential ZIP codes lie in Cumberland County.

Which first three digits do Portland'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 Portland starts with 041.

Three-digit prefixes of Portland'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 Portland's
PrefixSectional centerHereAll codes
041 Southern, ME (SCF 040) 9 15

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