Marilu is a distinctive girls' name in United States, ranking #9508 in 2019 with 11 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 79.6%. In 2019, approximately 1 in every 152,507 girls born was named Marilu. STABLE Recent data shows the name is currently stable.