Heydi is a distinctive girls' name in United States, ranking #3813 in 2007 with 42 recorded births. The name reached its all-time peak in 2008 with 43 births ranking #3733. Since 1996, the popularity has increased by 600.0%. In 2007, approximately 1 in every 45,773 girls born was named Heydi. FALLING Recent data shows the name is currently falling.