Marylou is a distinctive girls' name in United States, ranking #4967 in 2024 with 27 recorded births. The name reached its all-time peak in 1996 with 38 births ranking #3125. Since 1996, the popularity has decreased by 28.9%. In 2024, approximately 1 in every 59,748 girls born was named Marylou. RISING Recent data shows the name is currently rising.