Trajan is a distinctive boys' name in United States, ranking #7527 in 2021 with 11 recorded births. The name reached its all-time peak in 1999 with 141 births ranking #1001. Since 1996, the popularity has increased by 37.5%. In 2021, approximately 1 in every 158,931 boys born was named Trajan. FALLING Recent data shows the name is currently falling.