Isis is a distinctive girls' name in United States, ranking #594 in 1999 with 414 recorded births. The name reached its all-time peak in 2005 with 561 births ranking #522. Since 1996, the popularity has increased by 89.9%. In 1999, approximately 1 in every 4,284 girls born was named Isis. FALLING Recent data shows the name is currently falling.