Klay is a distinctive boys' name in United States, ranking #1882 in 2025 with 84 recorded births. The name reached its all-time peak in 2022 with 103 births ranking #1668. Since 1996, the popularity has increased by 320.0%. In 2025, approximately 1 in every 20,334 boys born was named Klay. FALLING Recent data shows the name is currently falling.