Deirdre is a distinctive girls' name in United States, ranking #6400 in 2012 with 20 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 81.7%. In 2012, approximately 1 in every 88,037 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.