When you put up your Santa Claus decorations and when you take them down again is a personal choice, but it’s one that can be influenced by many factors.
For example, in many communities, it’s acceptable to start decorating for Christmas as early as late October, while others prefer to wait until mid-December. A good rule of thumb is to wait until the week after Thanksgiving.
You have slightly more leeway after Christmas. Some communities consider the season of Christmas to extend well into January. You’ll find, however, that most people will have removed their decorations shortly after the New Year.