Ilsa is a distinctive girls' name in United States, ranking #5687 in 2010 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 2010, approximately 1 in every 74,055 girls born was named Ilsa. RISING Recent data shows the name is currently rising.