Riku is a distinctive boys' name in United States, ranking #4850 in 2023 with 21 recorded births. This places Riku in the top 34% 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 24 births ranking #4391. Since 1996, the popularity has increased by 162.5%. In 2023, approximately 1 in every 81,360 boys born was named Riku. FALLING Recent data shows the name is currently falling.