Alphonso is a distinctive boys' name in United States, ranking #2325 in 2005 with 50 recorded births. The name reached its all-time peak in 1996 with 83 births ranking #1314. Since 1996, the popularity has decreased by 39.8%. In 2005, approximately 1 in every 39,943 boys born was named Alphonso. STABLE Recent data shows the name is currently stable.