She was found by the Spartanburg County Sheriff's Office in South Carolina, authorities said.
Authorities said earlier they believed she may be with David Neil Henderson, 38, her uncle, who is a violent offender.
The girl was noticed missing at 4 a.m. Saturday. Authorities at first believed she was a runaway. A ping of her cell phone placed it at David Henderson's residence.
Authorities said earlier that the two may have traveled south from Polk County to Spartanburg County.
No word yet on whether any charges will be filed.
The AMBER Alert in this case has been canceled.