Heidy is a distinctive girls' name in United States, ranking #1049 in 2002 with 205 recorded births. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has increased by 95.2%. In 2002, approximately 1 in every 8,765 girls born was named Heidy. FALLING Recent data shows the name is currently falling.