HRDC encourages you to apply for your SIN in person at a HRDC office. This process is faster and more convenient, as it does not require you to part with your valuable identity documents or pay for getting photocopies of documents notarized. You may also apply by mail.

我现在找不到是否有必须在加拿大国内申请的条文。

6 - Can I apply by mail?
To apply for a Social Insurance Number by mail, you must mail your completed application form, identity document(s), and fee for replacement card (if applicable) to:

Social Insurance Registration
P.O. Box 7000
Bathurst, N.B.
E2A 4T1

Your document(s) will be returned with your SIN card. Please note that we are not responsible for lost documents, we suggest that these documents be certified.