Ally is a distinctive girls' name in United States, ranking #594 in 2004 with 473 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 498.7%. In 2004, approximately 1 in every 3,882 girls born was named Ally. FALLING Recent data shows the name is currently falling.