Jaida Cooke from Kilburn, near Belper, had last been seen at around 10am on Saturday, January 8.
Officers confirmed the 15-year-old had been located this evening (Monday, January 10).
Police also thanked the media and residents who had shared the appeal.
In a tweet, Derbshire Constabulary said: “Missing teenager Jaida Cooke has been found safe and well by officers. Thank you to all who shared our appeal.”