Mckynzie is a distinctive girls' name in United States, ranking #5073 in 2015 with 27 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has increased by 107.7%. In 2015, approximately 1 in every 66,098 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.