Ally is a distinctive girls' name in United States, ranking #737 in 2014 with 381 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 382.3%. In 2014, approximately 1 in every 4,687 girls born was named Ally. FALLING Recent data shows the name is currently falling.