Delia is a distinctive girls' name in United States, ranking #947 in 2005 with 261 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 39.6%. In 2005, approximately 1 in every 7,079 girls born was named Delia. FALLING Recent data shows the name is currently falling.