Service Canada has made it easy for you to apply for a Social Insurance Number (SIN), to replace your card, or to amend your SIN record.
Simply gather the documents you need and take them to your nearest Service Canada Centre. If your application and documents are in order, you will get a Social Insurance Number in one visit and receive your card within 10 business days.
$10 fee
for citizenship card, you'll have to fill out a application and mail it in.
http://www.cic.gc.ca/english/informa...ons/certif.asp