Gareth is a distinctive boys' name in United States, ranking #1580 in 2016 with 104 recorded births. This places Gareth in the top 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 104 births ranking #1580. Since 1996, the popularity has increased by 35.1%. In 2016, approximately 1 in every 18,242 boys born was named Gareth. STABLE Recent data shows the name is currently stable.