Tierney is a distinctive girls' name in United States, ranking #3296 in 2017 with 49 recorded births. This places Tierney in the top 18% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2000 with 110 births ranking #1616. Since 1996, the popularity has decreased by 52.0%. In 2017, approximately 1 in every 35,222 girls born was named Tierney. FALLING Recent data shows the name is currently falling.