Marilu is a distinctive girls' name in United States, ranking #7054 in 2012 with 18 recorded births. The name reached its all-time peak in 1996 with 54 births ranking #2414. Since 1996, the popularity has decreased by 66.7%. In 2012, approximately 1 in every 97,819 girls born was named Marilu. STABLE Recent data shows the name is currently stable.