Alphonso is a distinctive boys' name in United States, ranking #1778 in 1999 with 56 recorded births. The name reached its all-time peak in 1996 with 83 births ranking #1314. Since 1996, the popularity has decreased by 32.5%. In 1999, approximately 1 in every 34,287 boys born was named Alphonso. STABLE Recent data shows the name is currently stable.