Alonso is a distinctive boys' name in United States, ranking #669 in 2003 with 296 recorded births. The name reached its all-time peak in 2010 with 380 births ranking #636. Since 1996, the popularity has increased by 53.4%. In 2003, approximately 1 in every 6,673 boys born was named Alonso. RISING Recent data shows the name is currently rising.