How to submit mail-in applications : 
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Embassy mailing address:

Royal Embassy of Cambodia/ Cambodian Passport
4530 16th Street N.W.
Washington D.C. 20011

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1. FEDEX (Express Mail only created online with valid FedEx account and/or credit card account ) *recommended
   do not use FedEx-Home or FedEx-Ground or hand-written waybill slip.
   or
   UPS (Express Mail or UPS-ground created online) *recommended
   
   - Prepare a self-addressed prepaid return envelope with your name as the sender and recipient.
   - DO NOT INSERT the Embassy information as the sender to avoid any unwanted invoice address to the Embassy.
   - Do not use the hand-written airwaybill or waybill as the information/account is not validated. 
   - Insert a copy of the official receipt for the prepaid return envelope. 
   - If you have an account, please prepare the airwaybill or waybill online.
   - For outside the United States territory, insert the commercial invoice.
   
   
2. United States Postal Service (USPS) 
   - Priority-mail envelope with a tracking number 
   - Include a self-addressed prepaid return envelope with your name as the sender and recipient
   - If you have an account, please prepare the waybill slip online​
   - DO NOT use regular posted mail (not secured/no tracking number).
   - Below are samples of USPS shipping label : ​

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Reminder :

• Please prepare the prepaid return envelope paid directly to your mail account or credit card
• Insert only your information as the SENDER & RECIPIENT of the prepaid return envelope
• Do not use the hand written airwaybill or waybill as the information/account is not validated
• It takes 3-5 working days to process
• For quick turn-around, send your application using 2-day or overnight shipping for both envelopes ​
• For outside United States applicants, please insert the COMMERCIAL INVOICE as per customs requirements for International shipping
• Keep the copy of your mail receipt and tracking number for tracking purposes
• The Visa Office does not alert applicants upon receiving their envelopes, please keep yourself informed by checking the tracking number online or sign-up for notification from the courier
• Envelops that arrive on weekends or holiday won't be opened until the next business day