Trajan is a distinctive boys' name in United States, ranking #1001 in 1999 with 141 recorded births. This places Trajan in the top 9% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 141 births ranking #1001. Since 1996, the popularity has increased by 1,662.5%. In 1999, approximately 1 in every 13,618 boys born was named Trajan. FALLING Recent data shows the name is currently falling.