Lean is a distinctive girls' name in United States, ranking #10367 in 1997 with 8 recorded births. This places Lean in the bottom 36% 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 1997, approximately 1 in every 217,582 girls born was named Lean. FALLING Recent data shows the name is currently falling.