Rajah is a distinctive boys' name in United States, ranking #7994 in 2010 with 10 recorded births. The name reached its all-time peak in 2020 with 17 births ranking #5404. Since 1996, the popularity has increased by 66.7%. In 2010, approximately 1 in every 191,841 boys born was named Rajah. FALLING Recent data shows the name is currently falling.