Delta is a distinctive girls' name in United States, ranking #7696 in 2000 with 13 recorded births. The name reached its all-time peak in 2019 with 136 births ranking #1571. Since 1996, the popularity has decreased by 18.8%. In 2000, approximately 1 in every 139,690 girls born was named Delta. FALLING Recent data shows the name is currently falling.