A Diplomatic Post Office (DPO) address is a US State Department mail channel that reaches an embassy or consulate overseas through the USPS network. USPS carries it at US domestic prices, no other carrier will touch it, and each parcel needs a customs form. The rules quoted below were read from usps.com on 2026-08-11.
An overseas embassy address that behaves like a US ZIP on your label, with a customs form on the outside.
USPS is explicit: “Mail and shipments must be addressed to a specific person; addressing to 'Any Service Member' is no longer permitted.” A DPO address never carries an overseas country name or a foreign postal code. The line where you would normally write the country reads “DPO” and one of three regional codes, followed by a US-format ZIP.
The regional codes: AE covers Europe, Middle East, Africa and Canada; AA covers the Americas outside the US; AP covers Asia and the Pacific. The recipient's unit and box number replace a street address. USPS' matching examples for APO and FPO addresses read the same way — the only difference is the letters before the ZIP.
The DPO network is operated by USPS in partnership with the Department of State Postal, Courier, and Diplomatic Pouch Services. Commercial carriers have no delivery relationship with an embassy mailroom overseas, and their systems reject the ZIP at label creation.
USPS states plainly: “Ship to an APO/FPO/DPO and you'll pay domestic prices.” A Priority Mail parcel to DPO AE 09498 costs the same as one to a US ZIP, not the international rate.
USPS sells an APO/FPO/DPO Large Flat Rate Box discounted below the standard Large Flat Rate. Order the box from the USPS Store like any other Priority Mail supply — delivery is free.
USPS caps a DPO package at 27 inches long by 14 inches wide by 14 inches high. APO and FPO limits are the same on standard mail classes, and Priority Mail Flat Rate boxes are exempt from the length rule within their published dimensions. Weight limits mirror the domestic USPS mail class the label rides on.
| Mail class | Best for | Notes |
|---|---|---|
| Priority Mail Express | Time-sensitive, high-value | Fastest service USPS offers to DPO; delivery day is not a US-domestic guarantee once it leaves the country. |
| Priority Mail | Most parcels | Standard, envelope or flat-rate box. The APO/FPO/DPO Large Flat Rate Box carries the discount below the standard Large Flat Rate. |
| USPS Ground Advantage | Non-urgent, heavier items | Available to APO/FPO/DPO; travels by surface once outside the USPS network, so transit time is longer. |
| Media Mail | Books, sheet music, sound recordings | Accepted; content restrictions are the same as for domestic Media Mail. |
| First-Class Mail (letters, cards, flats) | Correspondence and photos | Domestic letter/flat rates apply. Weight and thickness rules are the domestic ones. |
A Priority Mail Flat Rate APO/FPO/DPO Large box currently prices below the standard Large Flat Rate; USPS Notice 123 lists both figures side by side, and the discount changes with each price update. Check the number in your shipping label tool the day you pay, not from memory.
USPS requires a customs declaration on every APO, FPO or DPO parcel, no exceptions. Which form depends on how the label is bought.
The form is generated electronically at label purchase as PS Form 2976-R. It prints as part of the shipping label sheet; no separate paper is needed at the counter.
Fill in the short PS Form 2976 for small parcels or PS Form 2976-B for larger or higher-value ones. The clerk asks which; do not guess, because the wrong form is what stalls the parcel at the mail treatment plant.
Describe the contents specifically — not “gift” or “items” — with a value in US dollars and a country of origin per item. Any prescribed medication needs the sender to sign the prohibited-items acknowledgement even when it is legal at the destination.
The service member or diplomat at the other end lives with an inspection regime USPS domestic recipients do not; a vague or missing form is the fastest way to lose a parcel to a treatment queue for weeks.
Prohibited items follow the international rules of the destination country plus the standard USPS list of nonmailable matter. USPS is upfront about the responsibility: “You are responsible for ensuring your package complies with the laws and regulations of the U.S. and the destination country.” Alcohol, tobacco, aerosols, firearms, ammunition, controlled drugs, agricultural products at some destinations, and lithium batteries above the USPS threshold are all trouble. When in doubt, ask the recipient — the embassy or unit knows what its mailroom will and will not release.
USPS Notice 123 publishes the current retail and commercial prices for the APO/FPO/DPO Flat Rate Box against the standard Large Flat Rate Box; the difference is the published discount and changes with each price update.
DPO stands for Diplomatic Post Office. It is a US State Department mail channel used by embassies and consulate personnel overseas, delivered through the USPS network at US domestic prices.
No. DPO, APO and FPO addresses accept USPS mail only. UPS and FedEx will not accept a shipment to a DPO ZIP, and any label a third party produces for one of those addresses has to be a USPS label.
USPS caps DPO packages at 27 inches long by 14 inches wide by 14 inches high. APO and FPO limits are the same on standard mail classes, with Priority Mail Flat Rate boxes exempt from the length rule within their published dimensions.
Yes. USPS requires a customs form on every APO, FPO or DPO parcel. Click-N-Ship generates PS Form 2976-R electronically at label purchase; the retail counter accepts a filled-out paper 2976 or 2976-B depending on the mail class and weight.
Recipient's full name, then the unit or box, then the DPO city code (AE, AA or AP) and ZIP. Example: JOHN ADAMS / UNIT 8400 BOX 0000 / DPO AE 09498-0048. No overseas country name, no street; addressing to “Any Service Member” is no longer permitted.