Mckynzie is a distinctive girls' name in United States, ranking #5185 in 2009 with 28 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has increased by 115.4%. In 2009, approximately 1 in every 65,603 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.