Lean is a distinctive girls' name in United States, ranking #13840 in 2015 with 7 recorded births. This places Lean in the bottom 28% 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 2015, approximately 1 in every 254,951 girls born was named Lean. FALLING Recent data shows the name is currently falling.