Listed below are the countries and their price groups and weight limits for the four principal categories of international mail. Complete tables of prices and weights appear in the Individual Country Listings (ICLs).
n/a = Service is not available.
1 Priority Mail International Flat Rate Service maximum weights: Flat Rate Envelopes and Small Flat Rate Priced Boxes, 4 lbs.; Medium and Large Flat Rate Boxes, 20 lbs.
2 First-Class Mail International maximum weights: Letters, 3.5 ozs.; Large Envelopes (flats), 4 lbs.; Packages (small packets), 4 lbs. Note that the heading in the maximum weight column lists both ounces and pounds (“ozs. / lbs.”) and that there are two numbers in the entry for each country (“3.5 / 4”) — this indicates that the maximum weight for Letters is 3.5 ozs., and that the maximum weight for both Large Envelopes and Packages is 4 lbs.
3 Ascension, Bolivia, and the Falkland Islands: Priority Mail International parcel services are not available. Priority Mail International Flat Rate Envelopes and Small Flat Rate Priced Boxes (maximum weight: 4 lbs. each) may be used.
4 Cuba: Priority Mail International parcel services to Cuba are not available. Priority Mail International Flat Rate Envelopes and Small Flat Rate Priced Boxes (maximum weight: 4 lbs. each) may be used. Dutiable articles may not be mailed to Cuba except for gift parcels and humanitarian donations, which must comply with the requirements and restrictions published in 15 CFR § 740.12 (and which must not exceed 4 lbs.), and consumer communications devices, computers, and software, which must comply with the requirements and restrictions published in 15 CFR § 740.19 (and which must not exceed 4 lbs.). Potentially dutiable items may be confiscated upon entering Cuba or returned to sender.
5 Korea, Democratic People’s Republic of (North Korea): Priority Mail International parcel services are not available, including the Small Flat Rate Priced Boxes. Priority Mail International Flat Rate Envelopes (maximum weight: 4 lbs.) may be used. Dutiable items and merchandise are prohibited.
