Tierney is a distinctive girls' name in United States, ranking #3164 in 2019 with 51 recorded births. The name reached its all-time peak in 2000 with 110 births ranking #1616. Since 1996, the popularity has decreased by 50.0%. In 2019, approximately 1 in every 32,894 girls born was named Tierney. FALLING Recent data shows the name is currently falling.