How Many People Are Named Io?
people named Io are alive in the United States today (estimate)
About 1 in 1,525,825 people in the US has this name
Based on 226 babies named Io in Social Security records from 2000 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
24 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Meaning unknown. In Greek mythology Io was a princess loved by Zeus, who changed her into a heifer in order to hide her from Hera. A moon of Jupiter bears this name in her honour.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
⚧ Gender Distribution
Of the babies given the name Io, 84.1% were girls and 15.9% were boys.
👥 Age Distribution
The average person named Io alive today is about 9 years old, and 100% are under 30. Half of them were between 4 and 13 in 2025.
📈 Popularity Over Time
Io first appears in the records in 2000 and was given most often in 2022, to 24 babies. In 2025, 10 babies got the name.
Babies given the name each year, 2000 to 2025
🏆 Rank History
Io has never been one of the 100 most popular girls' names. Its best rank was #6,548, in 2022. In 2025 it ranked #15,810. Among boys, its best rank was #9,948, in 2020.
| Girls | Boys | |
|---|---|---|
| Rank in 2025 | #15,810 | #12,739 |
| Best rank | #6,548 (2022) | #9,948 (2020) |
| Years in the top 100 | None | None |
| Rank in its biggest decade | #10,467 in the 2010s | #12,448 in the 2020s |
📍 State-Wise Distribution
People named Io alive today, by the state where they were born (estimate; state records start in 1910).
More people named Io were born in California than in any other state: about 5 of those alive today.
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