Kauai is a distinctive boys' name in United States, ranking #8510 in 2021 with 9 recorded births. This places Kauai in the bottom 40% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 9 births ranking #8510. In 2021, approximately 1 in every 194,249 boys born was named Kauai. STABLE Recent data shows the name is currently stable.