Heidy is a distinctive girls' name in United States, ranking #1249 in 2013 with 191 recorded births. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has increased by 81.9%. In 2013, approximately 1 in every 9,185 girls born was named Heidy. FALLING Recent data shows the name is currently falling.