Alfonso is a distinctive boys' name in United States, ranking #1012 in 2025 with 223 recorded births. This places Alfonso in the top 7% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 508 births ranking #440. Since 1996, the popularity has decreased by 56.1%. In 2025, approximately 1 in every 7,660 boys born was named Alfonso. STABLE Recent data shows the name is currently stable.