Demarkus is a distinctive boys' name in United States, ranking #3121 in 2009 with 37 recorded births. The name reached its all-time peak in 2009 with 37 births ranking #3121. Since 1996, the popularity has increased by 12.1%. In 2009, approximately 1 in every 53,603 boys born was named Demarkus. RISING Recent data shows the name is currently rising.