Deirdre is a distinctive girls' name in United States, ranking #3065 in 2005 with 52 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 52.3%. In 2005, approximately 1 in every 35,533 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.