Delia is a distinctive girls' name in United States, ranking #986 in 2007 with 272 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 45.5%. In 2007, approximately 1 in every 7,068 girls born was named Delia. FALLING Recent data shows the name is currently falling.