Kilian is a distinctive boys' name in United States, ranking #1167 in 2025 with 177 recorded births. This places Kilian 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 2023 with 212 births ranking #1032. Since 1996, the popularity has increased by 608.0%. In 2025, approximately 1 in every 9,650 boys born was named Kilian. FALLING Recent data shows the name is currently falling.