Riku is a distinctive boys' name in United States, ranking #5072 in 2021 with 19 recorded births. This places Riku in the top 36% 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 137.5%. In 2021, approximately 1 in every 92,012 boys born was named Riku. FALLING Recent data shows the name is currently falling.