Heidy is a distinctive girls' name in United States, ranking #1808 in 1997 with 83 recorded births. This places Heidy in the top 11% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 338 births ranking #809. Since 1996, the popularity has decreased by 21.0%. In 1997, approximately 1 in every 20,972 girls born was named Heidy. FALLING Recent data shows the name is currently falling.