Ada Avila was born in Portoviejo, Manabi Province, Ecuador, on 14 January 1910. 
She emigrated to the United States in 1955, settling in New York. She later moved to Deltona, Florida, where she currently resides.
As of May 10, 2023, she is currently the oldest validated living person born in Ecuador. Ms. Avila became the oldest known living person in Florida after Ms. Harris died, likely on 3 May 2021. She later became the oldest known living Ecuadorian-born person after the death of 113-year-old Ms. Velez Bravo on 12 October 2021.
Ms. Avila is currently the sixth-oldest validated living person in the United States [after Ms. Ceccarelli (115.2), Ms. Plummer (114.9), Ms. Willis (114.3), Ms. Francis (113.8) and Ms. Berg (113.5)], the second-oldest validated living emigrant in the world (after Ms. Branyas Morera) and the third-oldest validated Ecuadorian-born person ever (after Ms. Capovilla and Ms. Velez Bravo).

In 1950, with her husband and children.

 On the left in New York City in 1956.

Aged 66 in 1976.

On her 90th birthday in 2000.

On her 108th birthday in 2018.

On her 109th birthday in 2019.

On her 110th birthday in 2020.

Aged 111 after being vaccinated against COVID-19 in February 2021.

On her 112th birthday in 2022.

Aged 112 in March 2022.

Aged almost 113 in January 2023.

On her 113th birthday in 2023.