Louisa is a distinctive girls' name in United States, ranking #1712 in 2005 with 116 recorded births. The name reached its all-time peak in 2021 with 424 births ranking #687. Since 1996, the popularity has decreased by 10.1%. In 2005, approximately 1 in every 15,928 girls born was named Louisa. RISING Recent data shows the name is currently rising.