Mariko is a distinctive girls' name in United States, ranking #7767 in 2005 with 15 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #4013. Since 1996, the popularity has decreased by 44.4%. In 2005, approximately 1 in every 123,180 girls born was named Mariko. RISING Recent data shows the name is currently rising.