Heidy is a distinctive girls' name in United States, ranking #1603 in 2015 with 134 recorded births. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has increased by 27.6%. In 2015, approximately 1 in every 13,318 girls born was named Heidy. FALLING Recent data shows the name is currently falling.