Louisa is a distinctive girls' name in United States, ranking #697 in 2025 with 407 recorded births. The name reached its all-time peak in 2021 with 424 births ranking #687. Since 1996, the popularity has increased by 215.5%. In 2025, approximately 1 in every 3,949 girls born was named Louisa. RISING Recent data shows the name is currently rising.