Effective October 15, 2026, the Postal Service™ is revising the Individual Country Listing for Comoros in Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) to note that mailable items must include a new 5-digit postcode, which identifies delivery zones in Comoros.
This revision is based on a formal request that La Poste Comores (the designated postal operator of Comoros) made through the Universal Postal Union via International Bureau Circular 126, dated August 24, 2026.
Mailing Standards of the United States Postal Service, International Mail Manual (IMM)
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Individual Country Listings
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Comoros
Country Conditions for Mailing
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Observations
[Revise the text to read as follows:]
Each item mailed to Comoros must include the appropriate 5-digit postcode. The postcode must be placed to the left of the locality name and above the country name. For more information, please go to postecomores.com.
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Although effective October 15, 2026, the Postal Service will incorporate this revision into the January 17, 2027, edition of the online IMM. The IMM is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 10-15-26
