Mckynzie is a distinctive girls' name in United States, ranking #4042 in 2011 with 37 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has increased by 184.6%. In 2011, approximately 1 in every 47,535 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.