Jacqueline Ann Holly, 69, was last seen Saturday at about 4 p.m. at her residence in the 1000 block of Cressey Street in Compton.
Holly suffers from dementia, diabetes and high blood pressure, and requires medication.
Family members were concerned about her safety and were still grieving the death of Holly's sister, which also happened over the weekend.
The Los Angeles County Sheriff's Department posted on social media Holly had been located and thanked those involved in the search.