Hudgens was born in Salinas, California, and lived all over the West Coast – from Oregon to Southern California – with her parents, Gina (née Guangco), who held a succession of office jobs, and Gregory Hudgens, a firefighter. She was raised as a Roman Catholic and has a younger sister, Stella Hudgens, who is also an actress. Hudgens is of mixed cultural background, as her father is of Irish and Native American descent, and her mother, a native of Manila, is of Chinese-Filipino-Spanish descent. Two of her grandparents were musicians.
