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International Packages except First-Class Package International Service Length is the longest side of the parcel. Girth is the measurement around the thickest part of the parcel. Length plus girth cannot …

International Packages except First-Class Package International Service Length is the longest side of the parcel. Girth is the measurement around the thickest part of the parcel. Length plus girth cannot …

Large Package Any dimension over 12 inches (30.48 cm)

Postal Code The Origin ZIP Code and Destination Postal Code are required to provide a postage prices. What ZIP Code are you mailing from? What Postal Code are you mailing to?

Dec 22, 2025 · Mailing date must be between 12/22/2025 and 2/20/2026.

Priority Mail International ® Large Flat Rate Box USPS-Produced Box: 12" x 12" x 5-1/2" Maximum weight 20 pounds.

Length is the longest dimension. Length is the longest dimension. Girth is the distance around the thickest part.

Jan 1, 2026 · Domestic Zone Chart Postal Zone Charts Get Zone Chart Get Zone for ZIP Code Pair Effective Date: January 1, 2026 Enter a 3-digits ZIP Code

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