Ilsa is a distinctive girls' name in United States, ranking #7777 in 2021 with 14 recorded births. The name reached its all-time peak in 2011 with 34 births ranking #4288. Since 1996, the popularity has decreased by 26.3%. In 2021, approximately 1 in every 117,122 girls born was named Ilsa. RISING Recent data shows the name is currently rising.