How to Mail Holiday Cards and Care Packages to Military Addresses (APO/FPO/DPO)

Mailing a holiday card to a service member overseas is simpler than most people expect — and easier to get wrong than a domestic card. The address looks different, the deadlines come weeks earlier than the ones for mail inside the United States, and a package needs paperwork a card does not. Get the three pieces right — the APO, FPO, or DPO address format, the right 2026 send-by date for the service you are using, and the correct postage — and a card from your kitchen table reaches a military post office abroad at domestic postage prices.

The short version: a standard Christmas card to a military address costs the same as a domestic card — one Forever stamp, $0.82 — because USPS charges domestic prices for APO/FPO/DPO mail even when the recipient is overseas. But the dates are much earlier. For expected delivery before December 25, 2026, USPS recommends mailing Ground Advantage packages to military addresses by Wednesday, November 4, and First-Class Mail cards and letters and Priority Mail packages by Wednesday, December 9. Priority Mail Express Military Service goes by Wednesday, December 16, except to ZIP code 093, where it is not available. Those are recommended dates, not guarantees, so treat them as backstops and mail earlier when you can.

What APO, FPO, and DPO mean

These three designations are the military and diplomatic equivalents of a city name in a domestic address. USPS uses them on its military mail page as follows: APO stands for Army/Air Post Office, FPO for Fleet Post Office, and DPO for Diplomatic Post Office. The two letters after the designation are a region code, not a state: AE covers Europe, the Middle East, and Africa; AA covers the Americas; and AP covers the Pacific. So “APO AE” and “FPO AP” are not typos or abbreviations to expand — they are the complete, correct form, and they take the place of any city and country.

That substitution is why military mail works at domestic prices. The piece travels through the U.S. mail system to a military post office, and from there through military transport, rather than entering a foreign postal system as ordinary international mail. It is also why the address rules below are strict: a city or country name on the envelope can pull the piece out of the military channel and into a foreign network, where it may be delayed or returned.

The 2026 military send-by dates

USPS publishes a separate holiday table for military mail, and every date in it sits ahead of the domestic dates. For expected delivery before December 25, 2026, the recommended send-by dates are:

Service	Recommended send-by date (2026)	What it is best for
USPS Ground Advantage	Wednesday, November 4	Packages, when cost matters more than speed
First-Class Mail	Wednesday, December 9	Cards and letters — the usual holiday mailing
Priority Mail	Wednesday, December 9	Packages that need to move faster than Ground Advantage
Priority Mail Express Military Service (PMEMS)	Wednesday, December 16	Urgent packages, where the destination post office offers the service

Three qualifications matter. First, these dates apply to every APO, FPO, and DPO ZIP Code range USPS lists — 090 through 099, 340, and 962 through 966 — with one exception: Priority Mail Express Military Service is not available to ZIP code 093, so anything bound for those addresses must go by an earlier service. Second, USPS is explicit that these are recommended dates for expected delivery, not guarantees; actual delivery depends on origin, destination, acceptance time, and other conditions. Third, the Ground Advantage date deserves emphasis because it has already arrived by the time most people start thinking about holiday mail: Wednesday, November 4. A care package sent by the economy service after that date is not doomed, but it has missed the date USPS recommends for Christmas delivery, and the sensible move is to step up to Priority Mail rather than hope.

For comparison, the domestic dates for the same season are later across the board: First-Class Mail and Ground Advantage in the contiguous United States by Thursday, December 17, Priority Mail by Friday, December 18, and Priority Mail Express by Saturday, December 19. If military addresses are on your list, they — not December 17 — set your real deadline. Our 2026 holiday mailing calendar lays the domestic, international, and military tables side by side.

How to address military mail correctly

USPS requires four elements on every shipment to an APO, FPO, or DPO address, and the order matters. Use this format, with the recipient’s actual details in place of the placeholders:

[Rank] [Full Name]
[Unit / PSC] BOX [Number]
APO AE [ZIP Code, 9 digits where assigned]

For a Fleet Post Office address the pattern is the same, with FPO and the AP region code; for a Diplomatic Post Office address, DPO with the appropriate region code. Three rules from the USPS military mail page are worth stating plainly, because each one corrects a common mistake:

• Include the recipient’s name, rank, and unit, plus the 9-digit ZIP Code. A partial address — a name and an APO ZIP alone — is not enough. The unit and box number are what route the piece inside the military post office system.
• Always include a return address. Without one, an undeliverable piece has nowhere to go, and you will never learn that it missed.
• Do not include a city or country name. This is the rule that surprises senders most. A well-meaning “Germany” or “Japan” on the envelope can route the piece into a foreign mail network instead of the military one. The APO, FPO, or DPO designation plus the region code and ZIP Code is the complete destination.

And one rule that is now absolute: mail must be addressed to a specific person. USPS states that addressing to “Any Service Member” is no longer permitted. If you want to support troops generally rather than one person, the route is through an established charity or morale organization that collects and forwards mail, not through a generically addressed envelope.

What a card costs, and what a package costs

Cards and letters are the simple case, and that is good news: they travel as First-Class Mail at domestic letter prices. The postage table is the same one that governs domestic cards:

What you are mailing	Postage	How to pay it
Standard rectangular card or letter, up to 1 oz	$0.82	One Forever stamp
Letter, over 1 oz up to 2 oz	$1.11	One Forever stamp + one 29-cent additional-ounce stamp
Square, rigid, or lumpy envelope, 1 oz	$1.31	Forever stamp + 49-cent nonmachinable surcharge
Large envelope (flat), 1 oz	$1.69	Priced by weight as a flat

Weigh a finished card before stamping a batch, exactly as you would for domestic mail: a photo insert, a gift card, or a folded family letter can push an envelope past one ounce without looking heavy, and a square envelope costs $1.31 even at one ounce. The full weight and shape rules are in our guides to how many stamps Christmas cards need and whether greeting cards need extra postage.

Packages are priced as packages, not letters, and the choice of service is a trade between the November 4 and December 9 dates above and the price of the faster service. Two practical helps from USPS are worth knowing before you buy a box. First, Priority Mail APO/FPO Large Flat Rate Boxes can be ordered free from The Postal Store and delivered to your door at no charge — you pay only the postage. Second, when a package is ready, USPS offers free package pickup at your address during normal business hours, scheduled online. Both remove a trip to the counter, which matters most in the December rush.

Packages: customs forms, restrictions, and size limits

This is where military mail stops behaving like domestic mail, and where most care-package problems start. USPS notes that you often need a customs form to ship overseas, and that its Click-N-Ship service will guide you through the customs-form process and tell you which forms a given shipment needs. Anyone sending an international package with an APO, FPO, or MPO ZIP Code in the return address needs to create a customs form online or fill out PS Form 2976-R before visiting a retail counter for the clerk to create the label. Descriptions on those forms now need to be more detailed than they used to be: USPS flags that more-detailed package descriptions are now required for all countries, so list contents specifically rather than in general terms.

Restrictions also vary by destination in a way domestic mail never does. What may be sent to one military post office may be restricted at another, and USPS provides an APO/FPO/DPO Restrictions Tool, keyed to the 5-digit military ZIP Code, for checking a specific destination before you pack. Check it before you buy contents, not after you seal the box — a prohibited item discovered at the counter costs the whole mailing. One hard limit is stated on the USPS page itself: a package to a DPO location may not exceed 27 inches long, 14 inches wide, and 14 inches high.

A final packing tip comes from the same page and costs nothing: put a second copy of the address inside the box, with both the destination address and your return address on it, in case the outside label is damaged. And remember that outdoor conditions can affect contents in transit — USPS specifically warns that desert temperatures typically exceed 100 degrees, which can damage delicate goods such as electronics. Chocolate, candles, and anything meltable deserve the same thought in a holiday box headed to a warm climate.

Common mistakes with military holiday mail

• Planning military mail on the domestic calendar. December 17 is the domestic First-Class date. Military First-Class mail is due December 9, and military Ground Advantage packages were due November 4. The domestic dates are irrelevant to this list.
• Adding a country name “to help.” It does the opposite: it can pull the piece into a foreign postal network. APO/FPO/DPO plus the region code and ZIP Code is the complete address.
• Addressing a package to “Any Service Member.” No longer permitted. Address every piece to a specific person, or send through an organization set up for general support.
• Sealing a package before checking restrictions and customs forms. The restrictions tool and the customs form come before the tape, not after.
• Sending the economy package late and hoping. After November 4, Ground Advantage has missed its recommended date for Christmas delivery. Step up to Priority Mail (December 9) or Priority Mail Express Military Service (December 16, where available) instead of sending the slow service late.
• Forgetting the return address. On military mail it is required, not optional, and it is the only way an undeliverable card or package comes back to you in time to fix it.

Worked example: a Decatur household’s military list

Take a household in Decatur (GA 30030) — the same kind of Atlanta-area sender this site’s other examples use — with two military recipients: a niece at an APO AE address and a family friend at an FPO AP address. Their list is small, but it runs on two different clocks, and sorting it early is the whole job.

The care package for the APO address is packed first, in late October: snacks, a paperback, socks, and a handwritten card inside the box. It goes by Ground Advantage before Wednesday, November 4, because that is the recommended date for the economy service — and because the box, once sealed, still needs its customs form and a restrictions check for its ZIP Code before it leaves the house. The two holiday cards — one for each recipient — are written with the November batch but held to a different rule: as First-Class letters they are due by Wednesday, December 9, and in practice they go out in the first week of December with the domestic cards, each with one Forever stamp ($0.82) after a sample weighing confirms both are standard rectangular envelopes under one ounce. The return address on every piece is the Decatur address, and neither envelope carries a city or country name.

Total postage for the cards: $1.64. The package’s postage depends on its weight and service, which is exactly why it is priced at the counter or through Click-N-Ship rather than guessed at the kitchen table. The plan works not because any single step is clever, but because the earliest date — November 4 — was identified in October, while there was still time to pack properly, check restrictions, and complete the customs form without rushing.

A simple military mailing plan

1. October: Confirm each recipient’s full name, rank, unit, and 9-digit ZIP Code. Pack care packages and check the APO/FPO/DPO Restrictions Tool for each destination ZIP Code.
2. By Wednesday, November 4: Mail Ground Advantage packages to military addresses (official USPS recommended date for expected Christmas delivery).
3. First week of December: Mail holiday cards and letters — First-Class Mail, due by Wednesday, December 9 — and Priority Mail packages by the same date.
4. By Wednesday, December 16: Last resort for urgent packages via Priority Mail Express Military Service, where the destination post office offers it (not available to ZIP 093).
5. Throughout: No city or country names on any envelope; a return address on every piece; customs forms completed before packages reach the counter; a spare copy of the address inside every box.

One distinction runs through this whole guide and is worth keeping explicit: the dates, the address format, the size limit, and the customs-form requirements above come from USPS official pages, linked below. The mailing plan — the October start, the first-week-of-December card batch, the “step up a service rather than hope” advice — is editorial recommendation built on those dates, not a USPS promise. USPS recommends; it does not guarantee. Mail early enough that the distinction never matters.

Frequently Asked Questions

Does a Christmas card to an APO address cost more than a domestic card?

No. USPS charges domestic prices for mail to APO, FPO, and DPO addresses, so a standard rectangular card up to 1 ounce costs $0.82 — one Forever stamp — exactly as it would to an address in the United States. What changes is not the price but the deadline: military First-Class Mail is due December 9, 2026, not December 17.

Can I address a card to “Any Service Member”?

No. USPS states that mail to military addresses must be addressed to a specific person, and that addressing to “Any Service Member” is no longer permitted. Include the recipient’s full name, rank, and unit, plus the APO, FPO, or DPO designation and the 9-digit ZIP Code.

Why must I leave the country name off a military address?

Because the APO, FPO, or DPO designation plus the region code (AE, AA, or AP) and ZIP Code is the complete destination in the military mail system. Adding a city or country name can divert the piece into a foreign postal network instead of the military channel, causing delay or return.

Do I need a customs form for a holiday card to a military address?

A plain card or letter is the simplest military mailing, and the customs-form work USPS describes belongs mainly to packages: you often need a customs form to ship a package overseas, and Click-N-Ship will tell you which forms a given shipment needs. For a package, complete the customs form — online through Click-N-Ship or on PS Form 2976-R where USPS requires it — before visiting the counter, and check the APO/FPO/DPO Restrictions Tool for the destination ZIP Code before packing.

What if I missed the November 4 Ground Advantage date for a care package?

Step up a service rather than sending the slow service late and hoping. Priority Mail to military addresses is recommended by Wednesday, December 9, and Priority Mail Express Military Service by Wednesday, December 16, where the destination post office offers it. Note that Priority Mail Express Military Service is not available to ZIP code 093.

Is there a size limit for packages to diplomatic addresses?

Yes. USPS states that a package to a DPO location may not exceed 27 inches long, 14 inches wide, and 14 inches high. Check the dimensions before packing, and use the APO/FPO/DPO Restrictions Tool for any other destination-specific limits.

Sources

The rates, dates, and rules in this guide were checked against these official USPS pages:

• USPS: Military & Diplomatic Mail (APO/FPO/DPO)
• USPS: 2026 Holiday Shipping Dates
• USPS: First-Class Mail
• USPS News Release (Sep 22, 2026): Recommended 2026 Holiday Mailing and Shipping Dates

Related Guides

• Holiday mailing guides — the hub for this series, covering timelines, preparation, and etiquette.
• 2026 holiday mailing calendar — domestic, international, and military dates side by side.
• The complete guide to holiday mailing in the USA — timeline, postage, and preparation in one place.
• How to address Christmas cards properly — domestic envelope format and etiquette in detail.