Ally is a distinctive girls' name in United States, ranking #657 in 2001 with 383 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 384.8%. In 2001, approximately 1 in every 4,701 girls born was named Ally. FALLING Recent data shows the name is currently falling.