Ally is a distinctive girls' name in United States, ranking #585 in 2012 with 498 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 530.4%. In 2012, approximately 1 in every 3,536 girls born was named Ally. FALLING Recent data shows the name is currently falling.