The 108-year-old program fulfills wish lists for families and children in need.
For the first time, gift-givers can adopt families online. The USPS says the new system will let them reach more children across the country.
Kids can address their letters and lists to Santa at 123 Elf Road, North Pole, 88888.
The helpful "elves" fulfilling the wish lists can pick up a letter from any city in the country. The gifts are also tax deductible.
As a reminder, all gifts must be mailed by December 20.
If you want your child to be added to the list or want to help out a family, click here.