Delia is a distinctive girls' name in United States, ranking #1047 in 2001 with 205 recorded births. This places Delia in the top 6% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 272 births ranking #986. In 2001, approximately 1 in every 8,783 girls born was named Delia. FALLING Recent data shows the name is currently falling.