Tierney is a distinctive girls' name in United States, ranking #7456 in 2025 with 15 recorded births. The name reached its all-time peak in 2000 with 110 births ranking #1616. Since 1996, the popularity has decreased by 85.3%. In 2025, approximately 1 in every 107,151 girls born was named Tierney. FALLING Recent data shows the name is currently falling.