Mckinsey is a distinctive girls' name in United States, ranking #4263 in 2012 with 35 recorded births. The name reached its all-time peak in 2006 with 55 births ranking #3075. Since 1996, the popularity has decreased by 16.7%. In 2012, approximately 1 in every 50,307 girls born was named Mckinsey. FALLING Recent data shows the name is currently falling.