Reiko is a distinctive girls' name in United States, ranking #14285 in 2013 with 7 recorded births. The name reached its all-time peak in 1997 with 11 births ranking #8199. Since 1996, the popularity has decreased by 22.2%. In 2013, approximately 1 in every 250,630 girls born was named Reiko. FALLING Recent data shows the name is currently falling.