Semaj is a distinctive boys' name in United States, ranking #767 in 2003 with 230 recorded births. The name reached its all-time peak in 2011 with 374 births ranking #627. Since 1996, the popularity has increased by 123.3%. In 2003, approximately 1 in every 8,588 boys born was named Semaj. FALLING Recent data shows the name is currently falling.