Koi is a unisex name with a rare feel, drawn from real birth records. Below you'll find how many babies have been named Koi across the United States, UK, Ireland and New Zealand, how popular Koi has been over the decades, and the year it peaked.
| Country | Births on record |
|---|---|
| United States since 1880 | 1,482 births |
| England & Wales since 1996 | 3 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Koi per year, United States (1995 to 2025). United States peaked in 2023 (127/yr) · England & Wales peaked in 2016 (3/yr).
Koi is an uncommon baby name in the United States. It was most common in 2023, when it ranked #3,023 nationally (given to 127 babies that year).
Kai · Kay · Kaia · Koa · Coy · Kia · Kya · Khai
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