Trajan is a distinctive boys' name in United States, ranking #2826 in 2006 with 41 recorded births. The name reached its all-time peak in 1999 with 141 births ranking #1001. Since 1996, the popularity has increased by 412.5%. In 2006, approximately 1 in every 50,125 boys born was named Trajan. FALLING Recent data shows the name is currently falling.