Erin Entrada Kelly was raised in Louisiana, but now lives in Delaware, near Philadelphia. She is a professor of children's literature in the graduate fiction and publishing programs at Rosemont College, where she earned her MFA. She has a bachelor's degree in women's studies and liberal arts from McNeese State University and an MFA in creative writing from Rosemont.

Erin is a New York Times bestseller whose work has been translated into several languages. She received the 2018 Newbery Medal for Hello, Universe. Netflix is currently in the process of adapting Hello, Universe into a feature film.