Delia is a distinctive girls' name in United States, ranking #1007 in 2011 with 250 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 33.7%. In 2011, approximately 1 in every 7,035 girls born was named Delia. FALLING Recent data shows the name is currently falling.