Mckinsey is a distinctive girls' name in United States, ranking #5538 in 2010 with 25 recorded births. The name reached its all-time peak in 2006 with 55 births ranking #3075. Since 1996, the popularity has decreased by 40.5%. In 2010, approximately 1 in every 71,093 girls born was named Mckinsey. FALLING Recent data shows the name is currently falling.