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ZIP Codes in Portland, MAINE

Find complete information about all ZIP codes in Portland, Maine. Our interactive map shows the postal code boundaries and locations throughout the city.

Portland Postal Codes

The postal system in Portland is organized to efficiently serve both residential and commercial areas. Each ZIP code represents a specific delivery zone within the city limits.

City Name Zip Code Type Population
Portland, ME PRIMARY 04101 STANDARD 10.260
Portland, ME PRIMARY 04102 STANDARD 12.801
Portland, ME PRIMARY 04103 STANDARD 24.317
Portland, ME PRIMARY 04104 PO BOX 1.758
Portland, ME ACCEPTABLE 04106 STANDARD 20.593
Portland, ME ACCEPTABLE 04107 STANDARD 8.393
Portland, ME ACCEPTABLE 04108 STANDARD 759
Portland, ME PRIMARY 04109 STANDARD indefined
Portland, ME ACCEPTABLE 04110 STANDARD 1.257
Portland, ME PRIMARY 04112 PO BOX 826
Portland, ME ACCEPTABLE 04116 PO BOX indefined
Portland, ME PRIMARY 04122 UNIQUE indefined
Portland, ME PRIMARY 04123 UNIQUE indefined
Portland, ME PRIMARY 04124 UNIQUE indefined
City Name Zip Code Type Population
Portland, ME PRIMARY 04101 STANDARD 10.260
Portland, ME PRIMARY 04102 STANDARD 12.801
Portland, ME PRIMARY 04103 STANDARD 24.317
Portland, ME PRIMARY 04104 PO BOX 1.758
Portland, ME ACCEPTABLE 04106 STANDARD 20.593
Portland, ME ACCEPTABLE 04107 STANDARD 8.393
Portland, ME ACCEPTABLE 04108 STANDARD 759
Portland, ME PRIMARY 04109 STANDARD indefined
Portland, ME ACCEPTABLE 04110 STANDARD 1.257
Portland, ME PRIMARY 04112 PO BOX 826
Portland, ME ACCEPTABLE 04116 PO BOX indefined
Portland, ME PRIMARY 04122 UNIQUE indefined
Portland, ME PRIMARY 04123 UNIQUE indefined
Portland, ME PRIMARY 04124 UNIQUE indefined
Código Postal EEUU - MAINE - PORTLAND

Definitions of Status

  • PRIMARY: Refers to the main name of the city, typically its official designation. Although the city might have an ACCEPTABLE alternative name, the primary name remains the official one.
  • ACCEPTABLE: Indicates a suitable alternative city name. Commonly abbreviated city names are often listed as unacceptable because abbreviations are not considered an acceptable city name format.
  • IMPROPER/NOT ACCEPTABLE: Denotes that an inappropriate city name was entered or received based on the provided information.
  • UNIQUE: Assigned to a business, government agency, or entity with a significant mail volume. This designation depends on the average daily volume of letter-sized mail received, the availability of ZIP code numbers in the postal area, and a cost-benefit analysis by the postal service.