Alonso is a distinctive boys' name in United States, ranking #722 in 2001 with 243 recorded births. The name reached its all-time peak in 2010 with 380 births ranking #636. Since 1996, the popularity has increased by 25.9%. In 2001, approximately 1 in every 7,995 boys born was named Alonso. RISING Recent data shows the name is currently rising.