Ilyssa is a distinctive girls' name in United States, ranking #4926 in 1999 with 22 recorded births. The name reached its all-time peak in 2004 with 41 births ranking #3587. Since 1996, the popularity has increased by 46.7%. In 1999, approximately 1 in every 80,626 girls born was named Ilyssa. FALLING Recent data shows the name is currently falling.