Thousands of letters to Santa arrive each year. The USPS Operation Santa program invites people to adopt and respond to them.Santa meets many children every year, so it helps to mention your name, age, and an interesting fact about yourself. Bring the holiday magic to your children with printable Santa letters you can personalize with free templates and print like it's fresh from the North Pole. Parents and teachers can learn about our Santa letter writing program. Find out how and when to send a letter to Santa. Want to mail a note to Santa Claus a.k.a. No stamps are required to mail a letter to Santa within Canada. Include your return address and drop the letter in any Canada Post mailbox or post office. General mailing address for all incarcerated male and female inmates: Inmate Name, Booking Number PO BOX 86164 Terminal Annex Los Angeles, CA 900860164