Piero is a distinctive boys' name in United States, ranking #6561 in 2012 with 13 recorded births. The name reached its all-time peak in 2007 with 37 births ranking #3122. Since 1996, the popularity has increased by 18.2%. In 2012, approximately 1 in every 145,894 boys born was named Piero. FALLING Recent data shows the name is currently falling.