Deirdre is a distinctive girls' name in United States, ranking #3688 in 2006 with 42 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 61.5%. In 2006, approximately 1 in every 45,264 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.