There are an estimated 499 people named Reiko alive worldwide today. That ranks Reiko at #16229 globally, with the highest concentrations in United States.
In the United States, Reiko is held by approximately 499 people, ranking #16229 among first names. That works out to roughly 0 per 100,000 Americans (or 1 in 665,130 U.S. residents).
Historically Reiko is used overwhelmingly as a female name (97.2% female).
Reiko appears in birth records going back to 1880. Use the chart below to see how its popularity has changed across decades, and the surname section to find common pairings.