Marilou is a distinctive girls' name in United States, ranking #11730 in 2024 with 8 recorded births. The name reached its all-time peak in 1996 with 14 births ranking #6607. Since 1996, the popularity has decreased by 42.9%. In 2024, approximately 1 in every 201,649 girls born was named Marilou. RISING Recent data shows the name is currently rising.