Mariko is a distinctive girls' name in United States, ranking #8035 in 1999 with 12 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #4013. Since 1996, the popularity has decreased by 55.6%. In 1999, approximately 1 in every 147,815 girls born was named Mariko. RISING Recent data shows the name is currently rising.