Mckynzie is a distinctive girls' name in United States, ranking #4566 in 2010 with 32 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has increased by 146.2%. In 2010, approximately 1 in every 55,541 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.