Piero is a distinctive boys' name in United States, ranking #4319 in 2011 with 23 recorded births. The name reached its all-time peak in 2007 with 37 births ranking #3122. Since 1996, the popularity has increased by 109.1%. In 2011, approximately 1 in every 82,565 boys born was named Piero. FALLING Recent data shows the name is currently falling.