Alonso is a distinctive boys' name in United States, ranking #622 in 2002 with 316 recorded births. The name reached its all-time peak in 2010 with 380 births ranking #636. Since 1996, the popularity has increased by 63.7%. In 2002, approximately 1 in every 6,144 boys born was named Alonso. RISING Recent data shows the name is currently rising.