Heidy is a distinctive girls' name in United States, ranking #1032 in 2011 with 242 recorded births. This places Heidy in the top 5% 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 increased by 130.5%. In 2011, approximately 1 in every 7,268 girls born was named Heidy. FALLING Recent data shows the name is currently falling.