Alejo is a distinctive boys' name in United States, ranking #7752 in 2024 with 10 recorded births. The name reached its all-time peak in 2025 with 22 births ranking #4544. Since 1996, the popularity has decreased by 41.2%. In 2024, approximately 1 in every 171,531 boys born was named Alejo. RISING Recent data shows the name is currently rising.