Osan Air Base Address Information
오산 공군기지
About Osan Air Base
Osan Air Base is actually located in Pyeongtaek, not Osan. Its name honors the historic Battle of Osan on July 5, 1950, where Task Force Smith—406 soldiers from the U.S. 24th Infantry Division's 21st Regiment—fought the first American ground engagement of the Korean War at Jungmi Ridge near Osan, suffering heavy casualties. Today it serves as headquarters of the U.S. 7th Air Force and is a critical hub for air operations on the Korean Peninsula, hosting A-10 and F-16 fighter aircraft.
Looking for the Osan Air Base address and postal code? This page provides the exact address, postal code, and English address needed to send letters and parcels to Osan Air Base.
Osan Air Base Address & Postal Code
| Unit Name | Osan Air Base |
| Korean Name | 오산 공군기지 |
| Branch | US Forces Korea |
| Unit Type | Air Base |
| Korean Address |
경기도 평택시 신장동
|
| English Address |
Osan Air Base, Pyeongtaek-si, Gyeonggi-do
|
| Postal Code |
17757
|
| Region | Gyeonggi-do |
| APO/FPO Address |
Unit #2xxx, APO AP 96278
* Use this APO/FPO address for all mail to this base |
| USPS ZIP | APO AP 96278 |
Osan Air Base History
Built as K-55 airfield in 1952
Tactical air operations base during the Korean War
U.S. 7th Air Force deployed in 1957
Currently a key air force hub on the Korean Peninsula
How to Send Mail & Parcels to Osan Air Base
🇺🇸 Sending Mail via APO/FPO (USPS Only)
⚠️ Important: Only USPS can deliver to APO/FPO addresses!
FedEx, UPS, DHL and other private carriers cannot deliver to APO/FPO addresses.
[Envelope/Label Example]
SSgt Jane Doe Unit 2065, Box 5678 APO AP 96278-2065
Carrier
USPS only (no FedEx/UPS/DHL)
Delivery Time
From US: 7-14 days, Priority Mail 5-7 days
Customs Form
CP72 required for parcels
Country
USA (not South Korea!)
📮 What is an APO/FPO Address?
APO (Army Post Office) serves Army/Air Force, FPO (Fleet Post Office) serves Navy/Marines.
The U.S. military uses APO/FPO addresses so personnel worldwide can send and receive mail at domestic U.S. postal rates.
AP stands for Armed Forces Pacific. All U.S. bases in Korea use the AP designation.
Always write "USA" as the country — not "South Korea" — or the mail won't be delivered.
🚕 Korean Address (For Visits / Navigation)
When visiting the base in person (taxi, navigation), use the Korean road name address:
경기도 평택시 신장동
Osan Air Base, Pyeongtaek-si, Gyeonggi-do
Map
Map is not available for security reasons.
Frequently Asked Questions
Q. What is the address of Osan Air Base?
A. The address of Osan Air Base is Osan Air Base, Pyeongtaek-si, Gyeonggi-do, postal code 17757.
Q. How do I write the address when sending a letter to Osan Air Base?
A. Write the recipient's name and rank, then the address Osan Air Base, Pyeongtaek-si, Gyeonggi-do, postal code 17757, Republic of Korea.
Q. Can I send a letter to Osan Air Base from overseas?
A. Yes. Use the English address Osan Air Base, Pyeongtaek-si, Gyeonggi-do and set Country to Republic of Korea.
Q. How do I use the postal code 17757 for Osan Air Base?
A. Postal code 17757 is the 5-digit code for Osan Air Base (Osan Air Base, Pyeongtaek-si, Gyeonggi-do). Always include it when sending mail to avoid delivery errors.
🇺🇸 Other US Forces Korea Bases
Camp Humphreys
InstallationCamp Humphreys, Pyeongtaek-si, Gyeonggi-do
View Address →
Kunsan Air Base
Air BaseKunsan Air Base, Gunsan-si, Jeonbuk
View Address →
Yongsan Garrison
GarrisonYongsan Garrison, 22 Itaewon-ro, Yongsan-gu, Seoul
View Address →
Camp Casey
Army BaseCamp Casey, Dongducheon-si, Gyeonggi-do
View Address →
Camp Walker
Army BaseCamp Walker, Nam-gu, Daegu
View Address →
Camp Carroll
Logistics BaseCamp Carroll, Waegwan-eup, Chilgok-gun, Gyeongsangbuk-do
View Address →
Related Pages
Last Updated: February 24, 2026 | Based on publicly available information