Marilu is a distinctive girls' name in United States, ranking #4162 in 2001 with 30 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 44.4%. In 2001, approximately 1 in every 60,019 girls born was named Marilu. STABLE Recent data shows the name is currently stable.