Alejo is a distinctive boys' name in United States, ranking #6862 in 1998 with 8 recorded births. The name reached its all-time peak in 2025 with 22 births ranking #4544. Since 1996, the popularity has decreased by 52.9%. In 1998, approximately 1 in every 238,915 boys born was named Alejo. RISING Recent data shows the name is currently rising.