It's time to start thinking about what you want Santa Claus to bring you this year. If you already know, you can write a letter and send it via USPS.

Kay Grover, a consumer affairs associate with the St. Louis Post Office, reads a letter addressed to Santa Claus and the North Pole in 2007. The USPS just announced it's now accepting letters to Santa as part of Operation Santa. File Photo by Bill Greenblatt/UPI UPI

Sept. 15 (UPI) -- It's time to start thinking about what you want Santa Claus to bring you this year.

If you already know, you can write a letter and send it via the United States Postal Service.

The USPS Monday kicked off the official 2025 season of USPS Operation Santa. The program is now in its 113th year, and it connects letter-writers with people and organizations, er ... Santa, to help fulfill their holiday wishes.

Families can submit letters at USPSOperationSanta.com. The website gives tips on how to write the letter and how to send it. Letters must be postmarked by Dec. 6 to be eligible for adoption and fulfillment.

This year, participants can fulfill wishes from multiple people within a single household by adopting a family letter.

"For more than a century, USPS Operation Santa has brought communities together to make the holidays brighter," said Sheila Holman, USPS marketing vice president, in a statement. "Each year, we receive far more letters than we have adopters, and this year we want to change that -- especially by encouraging participants to adopt family letters, which makes it possible to fulfill the wishes of an entire household at once."

Being an adopter is now easier. The USPS Operation Santa online gift catalog, introduced last year to streamline the fulfillment and shipping experience, will feature a significantly expanded selection with thousands of items.

When letter adoption opens on Nov. 17, adopters will be able to shop and ship conveniently and directly from the catalog.