Aizen is a distinctive boys' name in United States, ranking #1081 in 2025 with 199 recorded births. This places Aizen in the top 8% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2024 with 223 births ranking #1003. In 2025, approximately 1 in every 8,583 boys born was named Aizen. STABLE Recent data shows the name is currently stable.