Arlen is a distinctive boys' name in England & Wales, ranking #763 in 2025 with 44 recorded births. The name reached its all-time peak in 2021 with 57 births ranking #641. Since 1996, the popularity has increased by 780.0%. In 2025, approximately 1 in every 6,180 boys born was named Arlen. STABLE Recent data shows the name is currently stable.