Yes! US territories (Puerto Rico, Guam, US Virgin Islands, American Samoa, Northern Mariana Islands, etc.) are considered domestic destinations by USPS.

USPS offers the same flat rates to US territories as they do to any US state. This is significantly cheaper than UPS or FedEx, which typically charge 2-3 times more for shipments to these locations.

Key points for shipping to US territories:

• USPS treats territories as domestic mail, so you pay the same price as shipping anywhere in the continental US
• Flat Rate boxes work great for shipping electronics to territories
• A customs form is typically not required, but may be needed in some instances and can be completed online through USPS Click-n-Ship
• Many addresses in territories use PO Box numbers for delivery

Pro tip: Services like Pirate Ship can make the customs form process easier if one is required. They offer free accounts with commercial USPS rates and handle the paperwork online.

For more information about which US possessions and territories are considered domestic, visit the USPS FAQ page.