Hailly is a distinctive girls' name in United States, ranking #12235 in 2005 with 8 recorded births. The name reached its all-time peak in 2004 with 11 births ranking #9474. Since 1996, the popularity has increased by 60.0%. In 2005, approximately 1 in every 230,962 girls born was named Hailly. FALLING Recent data shows the name is currently falling.