Kaua is a distinctive boys' name in United States, ranking #11733 in 2009 with 6 recorded births. This places Kaua in the bottom 19% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 21 births ranking #4574. In 2009, approximately 1 in every 330,551 boys born was named Kaua. FALLING Recent data shows the name is currently falling.