Alonzo is a distinctive boys' name in United States, ranking #537 in 2005 with 452 recorded births. The name reached its all-time peak in 2022 with 651 births ranking #471. Since 1996, the popularity has increased by 11.1%. In 2005, approximately 1 in every 4,418 boys born was named Alonzo. STABLE Recent data shows the name is currently stable.