Trajan is a distinctive boys' name in United States, ranking #2269 in 1998 with 40 recorded births. The name reached its all-time peak in 1999 with 141 births ranking #1001. Since 1996, the popularity has increased by 400.0%. In 1998, approximately 1 in every 47,783 boys born was named Trajan. FALLING Recent data shows the name is currently falling.