Gareth is a distinctive boys' name in United States, ranking #1862 in 2004 with 66 recorded births. The name reached its all-time peak in 2016 with 104 births ranking #1580. Since 1996, the popularity has decreased by 14.3%. In 2004, approximately 1 in every 30,073 boys born was named Gareth. STABLE Recent data shows the name is currently stable.