Alejo is a distinctive boys' name in United States, ranking #6534 in 2023 with 13 recorded births. The name reached its all-time peak in 2025 with 22 births ranking #4544. Since 1996, the popularity has decreased by 23.5%. In 2023, approximately 1 in every 131,427 boys born was named Alejo. RISING Recent data shows the name is currently rising.