The elves go back to the North Pole as soon as the Christmas season ends. This is usually around the beginning of January, when they've completed all of their gift-wrapping and toy-making tasks. However, some elves stay behind at the workshop to handle any remaining work and make sure everything is ready for the next Christmas season. Overall, it's a busy and exciting time for the elves, but they always look forward to returning to their home at the North Pole.