Reiko is a distinctive girls' name in United States, ranking #11075 in 2012 with 10 recorded births. The name reached its all-time peak in 1997 with 11 births ranking #8199. Since 1996, the popularity has increased by 11.1%. In 2012, approximately 1 in every 176,074 girls born was named Reiko. FALLING Recent data shows the name is currently falling.