Idalys is a distinctive girls' name in United States, ranking #18355 in 2009 with 5 recorded births. The name reached its all-time peak in 2002 with 21 births ranking #5536. Since 1996, the popularity has decreased by 54.5%. In 2009, approximately 1 in every 367,374 girls born was named Idalys. FALLING Recent data shows the name is currently falling.