Piero is a distinctive boys' name in United States, ranking #5248 in 2006 with 17 recorded births. The name reached its all-time peak in 2007 with 37 births ranking #3122. Since 1996, the popularity has increased by 54.5%. In 2006, approximately 1 in every 120,889 boys born was named Piero. FALLING Recent data shows the name is currently falling.