Trajan is a distinctive boys' name in United States, ranking #3012 in 2002 with 31 recorded births. The name reached its all-time peak in 1999 with 141 births ranking #1001. Since 1996, the popularity has increased by 287.5%. In 2002, approximately 1 in every 62,628 boys born was named Trajan. FALLING Recent data shows the name is currently falling.