Heidy is a distinctive girls' name in United States, ranking #1127 in 2006 with 220 recorded births. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has increased by 109.5%. In 2006, approximately 1 in every 8,641 girls born was named Heidy. FALLING Recent data shows the name is currently falling.