Leith is a distinctive boys' name in United States, ranking #10318 in 2011 with 7 recorded births. This places Leith in the bottom 28% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 23 births ranking #4431. Since 1996, the popularity has decreased by 22.2%. In 2011, approximately 1 in every 271,284 boys born was named Leith. FALLING Recent data shows the name is currently falling.