Ilyssa is a distinctive girls' name in United States, ranking #4277 in 1998 with 26 recorded births. The name reached its all-time peak in 2004 with 41 births ranking #3587. Since 1996, the popularity has increased by 73.3%. In 1998, approximately 1 in every 67,957 girls born was named Ilyssa. FALLING Recent data shows the name is currently falling.