Ally is a distinctive girls' name in United States, ranking #630 in 2006 with 456 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 477.2%. In 2006, approximately 1 in every 4,169 girls born was named Ally. FALLING Recent data shows the name is currently falling.