Kao is a distinctive boys' name in United States, ranking #7923 in 2019 with 10 recorded births. This places Kao in the bottom 44% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 10 births ranking #5772. In 2019, approximately 1 in every 179,336 boys born was named Kao. RISING Recent data shows the name is currently rising.