Alfonzo is a distinctive boys' name in United States, ranking #2899 in 2009 with 41 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #1639. Since 1996, the popularity has decreased by 30.5%. In 2009, approximately 1 in every 48,373 boys born was named Alfonzo. RISING Recent data shows the name is currently rising.