Semaj is a distinctive boys' name in United States, ranking #1075 in 1998 with 122 recorded births. The name reached its all-time peak in 2011 with 374 births ranking #627. Since 1996, the popularity has increased by 18.4%. In 1998, approximately 1 in every 15,667 boys born was named Semaj. FALLING Recent data shows the name is currently falling.