Marilu is a distinctive girls' name in United States, ranking #5388 in 2008 with 27 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 50.0%. In 2008, approximately 1 in every 70,027 girls born was named Marilu. STABLE Recent data shows the name is currently stable.