Ilsa is a distinctive girls' name in United States, ranking #5356 in 2019 with 24 recorded births. The name reached its all-time peak in 2011 with 34 births ranking #4288. Since 1996, the popularity has increased by 26.3%. In 2019, approximately 1 in every 69,899 girls born was named Ilsa. RISING Recent data shows the name is currently rising.