Patricia Mercado was born in Tijuana, Mexico. At the age of 10 she moved to San Diego, California, where she still lives.

Patricia graduated from U.C.S.D. and Pratt Institute. 

Currently, Patricia teaches first grade at a dual-language school while she creates picture books for children.

Some of her favorite illustrators include Ezra Jack Keats, Max Velthuijs, Keizaburo Tejima, Juana Martinez-Neal, and David Diaz.