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City ZIP codes · Maine

Orono, ME ZIP Codes

2 ZIP codes use the postal name Orono, Maine (Census 2020 ZCTAs and GeoNames postal codes, October 2026), all residential. Orono's most populous ZIP code is 04473, with 8,371 people (ACS 2020-2024); 36% of its land is in the city of Orono.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Orono's ZIP codes?

04469: – median household income04473: $62k median household income044730446904469: – median household income04473: $62k median household income044730446904469: – median household income04473: $62k median household income04473
The 2 residential ZIP codes named Orono, 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 Orono

Residential ZIP codes with the postal name Orono, ME, largest first (ACS 2020-2024); sort by any column
County
04473 Penobscot County 8,371 483 $62k $273k
04469 Penobscot County 3,531 4,130 – –

Download the 2 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).

Which counties do Orono's ZIP codes reach?

Orono's residential ZIP codes lie in Penobscot County.

Which first three digits do Orono'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 Orono starts with 044.

Three-digit prefixes of Orono'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 Orono's
PrefixSectional centerHereAll codes
044 Eastern, ME (SCF 044) 2 68

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