How Many People Are Named Koi?
people named Koi are alive in the United States today (estimate)
About 1 in 232,348 people in the US has this name
Based on 1,482 babies named Koi in Social Security records from 1995 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
127 births
Trend
Stable (last 10 years)
⚧ Gender Distribution
Of the babies given the name Koi, 45.2% were girls and 54.8% were boys. The share of girls among babies named Koi rose from 35.7% in the 2000s to 53.4% in the 2020s.
👥 Age Distribution
The average person named Koi alive today is about 9 years old, and 100% are under 30. Half of them were between 3 and 14 in 2025.
📈 Popularity Over Time
Koi first appears in the records in 1995 and was given most often in 2023, to 127 babies. In 2025, 124 babies got the name.
Babies given the name each year, 1995 to 2025
🏆 Rank History
Koi has never been one of the 100 most popular boys' names. Its best rank was #2,258, in 2022. In 2025 it ranked #3,060. Among girls, its best rank was #2,207, in 2025.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #3,060 | #2,207 |
| Best rank | #2,258 (2022) | #2,207 (2025) |
| Years in the top 100 | None | None |
| Rank in its biggest decade | #3,472 in the 2010s | #2,852 in the 2020s |
📍 State-Wise Distribution
People named Koi alive today, by the state where they were born (estimate; state records start in 1910).
More people named Koi were born in Texas than in any other state: about 72 of those alive today. Compared with the national rate in the same years, Koi was given 15.8 times as often in Louisiana, 5.6 times in Georgia and 2.1 times in Texas.
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