Gareth is a distinctive boys' name in United States, ranking #2414 in 2011 with 52 recorded births. The name reached its all-time peak in 2016 with 104 births ranking #1580. Since 1996, the popularity has decreased by 32.5%. In 2011, approximately 1 in every 36,519 boys born was named Gareth. STABLE Recent data shows the name is currently stable.