Alonso is a distinctive boys' name in United States, ranking #733 in 2015 with 333 recorded births. The name reached its all-time peak in 2010 with 380 births ranking #636. Since 1996, the popularity has increased by 72.5%. In 2015, approximately 1 in every 5,755 boys born was named Alonso. RISING Recent data shows the name is currently rising.