Deirdre is a distinctive girls' name in United States, ranking #5021 in 2015 with 27 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 75.2%. In 2015, approximately 1 in every 66,098 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.