Delia is a distinctive girls' name in United States, ranking #863 in 1998 with 246 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 31.6%. In 1998, approximately 1 in every 7,182 girls born was named Delia. FALLING Recent data shows the name is currently falling.