Tierney is a distinctive boys' name in United States, ranking #9490 in 2006 with 8 recorded births. The name reached its all-time peak in 2006 with 8 births ranking #9490. Since 1996, the popularity has increased by 60.0%. In 2006, approximately 1 in every 256,890 boys born was named Tierney. STABLE Recent data shows the name is currently stable.