Deirdre is a distinctive girls' name in United States, ranking #2429 in 2004 with 70 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 35.8%. In 2004, approximately 1 in every 26,230 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.