Mariko is a distinctive girls' name in United States, ranking #9471 in 2003 with 11 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #4013. Since 1996, the popularity has decreased by 59.3%. In 2003, approximately 1 in every 166,095 girls born was named Mariko. RISING Recent data shows the name is currently rising.