Deirdre is a distinctive girls' name in United States, ranking #1928 in 1998 with 79 recorded births. The name reached its all-time peak in 1996 with 109 births ranking #1493. Since 1996, the popularity has decreased by 27.5%. In 1998, approximately 1 in every 22,366 girls born was named Deirdre. FALLING Recent data shows the name is currently falling.