Marilu is a distinctive girls' name in United States, ranking #3698 in 2002 with 36 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 33.3%. In 2002, approximately 1 in every 49,912 girls born was named Marilu. STABLE Recent data shows the name is currently stable.