Mia was born September 17, 2008, to parents Chris and Claire Talerico. She was born in Santa Barbara, California. She has a younger sister called Aubrey.
Mia became popular starting in 2010 when she portayed Charlotte "Charlie" Duncan on the TV series Good Luck Charlie. In the series she was the second youngest child in their family. When the series ended in 2014, Mia started a simple life until she was growing up.