Heidy is a distinctive girls' name in United States, ranking #1001 in 2004 with 236 recorded births. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has increased by 124.8%. In 2004, approximately 1 in every 7,780 girls born was named Heidy. FALLING Recent data shows the name is currently falling.