Heydi is a distinctive girls' name in United States, ranking #3733 in 2008 with 43 recorded births. The name reached its all-time peak in 2008 with 43 births ranking #3733. Since 1996, the popularity has increased by 616.7%. In 2008, approximately 1 in every 43,970 girls born was named Heydi. FALLING Recent data shows the name is currently falling.