Ally is a distinctive girls' name in United States, ranking #809 in 2009 with 349 recorded births. The name reached its all-time peak in 1998 with 636 births ranking #417. Since 1996, the popularity has increased by 341.8%. In 2009, approximately 1 in every 5,263 girls born was named Ally. FALLING Recent data shows the name is currently falling.