Semaj is a distinctive boys' name in United States, ranking #675 in 2010 with 354 recorded births. The name reached its all-time peak in 2011 with 374 births ranking #627. Since 1996, the popularity has increased by 243.7%. In 2010, approximately 1 in every 5,419 boys born was named Semaj. FALLING Recent data shows the name is currently falling.