Heydi is a distinctive girls' name in United States, ranking #6015 in 1999 with 17 recorded births. The name reached its all-time peak in 2008 with 43 births ranking #3733. Since 1996, the popularity has increased by 183.3%. In 1999, approximately 1 in every 104,340 girls born was named Heydi. FALLING Recent data shows the name is currently falling.