Marilu is a distinctive girls' name in United States, ranking #8603 in 2017 with 13 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 75.9%. In 2017, approximately 1 in every 132,760 girls born was named Marilu. STABLE Recent data shows the name is currently stable.