Effective November 3, 2025, the Postal Service™ will revise Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®), section 703.3.2.3, to reflect an update in the maximum dimensions allowed for items mailed to U.S. Department of State (DPO) destinations.
The U.S. Department of State has updated restrictions for all DPO locations that restrict the dispatch of items that do not fit in a purple U.S. military sack or bag. Mail of all classes to DPO locations must not exceed the following dimensions:
n Length: 27 inches.
n Width: 14 inches.
n Height: 14 inches.
Although this revision will not be published in the DMM until November 3, 2025, these standards are effective immediately.
Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM)
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700 Special Standards
703 Nonprofit USPS Marketing Mail and Other Unique Eligibility
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3.0 U.S. Department of State Mail
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[Revise the title of 3.2 to read as follows:]
3.2 Conditions for Authorized Mail
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3.2.3 Weight and Size Limits
[Revise the text of 3.2.3 to read as follows:]
Maximum weight and size dimensions must not exceed any of the following:
a. U.S. Department of State mail (Zip Codes 20521 and 20189):
1. Weight: 70 pounds.
2. Length: 29 inches.
3. Width: 29 inches.
4. Height: 29 inches.
5. Combined length and girth: 108 inches for all mail classes except USPS Ground Advantage — Retail.
6. USPS Ground Advantage — Retail mail combined length and girth: 130 inches.
b. U.S. Department of State mail to DPO destinations:
1. Length: 27 inches.
2. Width: 14 inches.
3. Height: 14 inches.
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The Postal Service will incorporate these revisions into the next edition of the online DMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 9-4-25
