The U.S. Olympic Committee confirmed in a statement that it had received the medal from the disgraced cyclist. Armstrong let his followers know on Twitter.
It was about eight months ago that Armstrong was officially stripped of his third-place finish in a time trial at the 2000 Summer Games.
International Olympic Committee officials took this action after the much-hyped television interview with Oprah Winfrey during which Armstrong confessed to using performance-enhancing drugs throughout much of his record-setting career.
The USOC said it has made arrangements to return the medal to IOC headquarters in Switzerland.