Semaj is a distinctive boys' name in United States, ranking #712 in 2001 with 248 recorded births. The name reached its all-time peak in 2011 with 374 births ranking #627. Since 1996, the popularity has increased by 140.8%. In 2001, approximately 1 in every 7,834 boys born was named Semaj. FALLING Recent data shows the name is currently falling.