Spiro is a distinctive boys' name in United States, ranking #8824 in 2007 with 9 recorded births. This places Spiro in the bottom 39% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 10 births ranking #8222. In 2007, approximately 1 in every 230,582 boys born was named Spiro. FALLING Recent data shows the name is currently falling.