Mckynzie is a distinctive girls' name in United States, ranking #11643 in 1997 with 7 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has decreased by 46.2%. In 1997, approximately 1 in every 248,666 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.