Tirso is a distinctive boys' name in United States, ranking #10861 in 2009 with 7 recorded births. The name reached its all-time peak in 2007 with 10 births ranking #8108. Since 1996, the popularity has increased by 40.0%. In 2009, approximately 1 in every 283,329 boys born was named Tirso. STABLE Recent data shows the name is currently stable.