Mckinsey is a distinctive girls' name in United States, ranking #3927 in 2003 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 2003, approximately 1 in every 52,201 girls born was named Mckinsey. FALLING Recent data shows the name is currently falling.