Alfonzo is a distinctive boys' name in United States, ranking #1933 in 1999 with 50 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #1639. Since 1996, the popularity has decreased by 15.3%. In 1999, approximately 1 in every 38,402 boys born was named Alfonzo. RISING Recent data shows the name is currently rising.