Io
The Story of Io
As a girl name
Io first appeared in U.S. Social Security Administration records as a girl name in 2000, with 5 babies given the name that year. Its peak popularity came in 2022, when 18 Ios were born — ranking #6,457 that year. As of 2026, Io ranks #6,844 for girls with 16 births, rising sharply (+48% over the past five years). In total, more than 216 Ios have been born in the U.S. since records began in 1880, spanning the 2000s through the 2020s.
As a boy name
Io first appeared in U.S. Social Security Administration records as a boy name in 2014, with 7 babies given the name that year. Its peak popularity came in 2014, when 7 Ios were born — ranking #9,639 that year. As of 2026, Io ranks #12,230 for boys with 5 births, with steady use. In total, more than 31 Ios have been born in the U.S. since records began in 1880, spanning the 2010s through the 2020s.
Popularity Over Time
Popularity by State
Names that sound like Io
Phonetically similar names — useful when Io is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Io
What does the name Io mean?
How popular is Io in 2026?
When was Io most popular?
In which U.S. states is Io most popular?
Is Io a unisex name?
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About the name Io
Io is a unisex baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 2000 and has accumulated 216 births in the dataset. Io's peak popularity came in 2022 when it ranked #6,457. Use the chart and map above to compare Io's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 2022 →
- Names of the 2020s →
- Names starting with "I" →
- Browse all girl names →
- Top names of 2026 →
- Browse unisex names →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.