Hailly is a distinctive girls' name in United States, ranking #11249 in 1997 with 7 recorded births. The name reached its all-time peak in 2004 with 11 births ranking #9474. Since 1996, the popularity has increased by 40.0%. In 1997, approximately 1 in every 248,666 girls born was named Hailly. FALLING Recent data shows the name is currently falling.