Lean is a distinctive girls' name in United States, ranking #15721 in 2014 with 6 recorded births. This places Lean in the bottom 18% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 17 births ranking #7378. In 2014, approximately 1 in every 297,656 girls born was named Lean. FALLING Recent data shows the name is currently falling.