Ilsa is a distinctive girls' name in United States, ranking #7253 in 2012 with 17 recorded births. The name reached its all-time peak in 2011 with 34 births ranking #4288. Since 1996, the popularity has decreased by 10.5%. In 2012, approximately 1 in every 103,573 girls born was named Ilsa. RISING Recent data shows the name is currently rising.