ZIP 34038 at a glance

USPS status
ActiveOn USPS’s APO/FPO/DPO table as of October 1, 2026.
Post office
FPOFleet Post Office, used by Navy and Marine Corps units and ships. USPS lists it as FPO AA 34038 in Postal Bulletin 22690 (Nov 2025).
Region
AA, Armed Forces AmericasCovers Central America, South America and the Caribbean (not Canada).
Delivery group
Central America, South America and the CaribbeanUSPS groups ZIP prefix 340 together for delivery-time estimates.
Exact location
Not publishedUSPS and the Department of Defense don’t disclose which base, ship or embassy a ZIP serves. That protects the people there. If you need to know, ask the recipient.

How to write an address for 34038

Use the recipient’s own unit and box. The last line is the only part this ZIP decides.

Don’t add a base, city or country. If a form asks for a country, choose United States.

What ZIP 34038 restricts

USPS lists 18 mailing restrictions for this ZIP, 11 of them bans on specific items. Restrictions are set per ZIP, so another ZIP in the same region can differ.

Can’t be sent

  • Cigarettes and all other tobacco products(C)
  • Obscene or horror material (prints, films, comics and the like)(C1)
  • E-cigarettes, vapes, e-liquids and their parts(C2)
  • Weapons of any kind(F1)
  • Replica weapons, inert explosives and weapon parts(F3)
  • Meat and animal by-products (bones, hides, feathers, wool samples)(H)
  • Fruits, vegetables, live animals and live plants(M)
  • Alcoholic beverages(R)
  • Brewing and distilling supplies (hops, malt, yeast)(R1)
  • Synthetic cannabinoids (K2, Spice)(S)
  • Cremated remains(X)

Paperwork and approvals

  • Customs form PS 2976 or 2976-A for anything 16 oz or heavier, and for any merchandise at any weight. Priority Mail Express Military Service needs PS 2976-B.(B)
  • Household goods and case lots of food need approval before mailing (military transportation office, or the Diplomatic Pouch and Mail office for a DPO)(T)

Size, weight and service

  • Must fit in a mail sack: at most 27 × 14 × 14 inches(I3)
  • Official government mail isn’t accepted(L)
  • No Registered Mail(N)
  • No Priority Mail Express Military Service(V)
  • No outside pieces (items too big to go inside a mail sack)(Z)

USPS codes for 34038: B-C-C1-C2-F1-F3-H-I3-L-M-N-R-R1-S-T-V-X-Z-Z1. What each code means.