Gareth is a distinctive boys' name in United States, ranking #2775 in 2009 with 44 recorded births. The name reached its all-time peak in 2016 with 104 births ranking #1580. Since 1996, the popularity has decreased by 42.9%. In 2009, approximately 1 in every 45,075 boys born was named Gareth. STABLE Recent data shows the name is currently stable.