Delia is a distinctive girls' name in United States, ranking #1125 in 2012 with 219 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 17.1%. In 2012, approximately 1 in every 8,040 girls born was named Delia. FALLING Recent data shows the name is currently falling.