Isis is a distinctive girls' name in United States, ranking #625 in 1998 with 376 recorded births. The name reached its all-time peak in 2005 with 561 births ranking #522. Since 1996, the popularity has increased by 72.5%. In 1998, approximately 1 in every 4,699 girls born was named Isis. FALLING Recent data shows the name is currently falling.