Kaio
#4,618 in 2025Boys' nameMeaning not yet documented
Kaio has been given to 429 babies in the U.S. since 1993. In 2025 it ranked #4,618 of 13,926 boys’ names in use. Its peak year was 2023, with 26 recorded.
Babies named Kaio, 2025
1 in 151,000
Kaio over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Kaio?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 151,000
- 22 of 3,315,165 births
- Among boys only
- 1 in 77,600
- <0.01% of boys
- Rank, 2025
- #4,618
- of 13,926 boys’ names in use
- Coin-flip room size
- 104,451 kids
- Even odds of a second one
Where Kaio sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 104,451 children born in 2025 and it's an even bet that one of them is another Kaio. In a class of 30 the chance is Under 1%.
When Kaios were born
Half of everyone ever recorded as Kaio was born before 2014 — so the typical Kaio is around 11 today.
- Biggest decade
- 2010s
- 38.9% of all use
- Born in the last 25 years
- 95.6%
- A modern name
- Recorded since 1950
- 429
- People you could plausibly meet
2010s — 38.9% of all recorded uses (167).
Is Kaio rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- −482
- Places dropped
- Rank vs 5 years ago
- +516
- Places climbed
- Rank vs 10 years ago
- +3,750
- Places climbed
- Births vs 10 years ago
- 2.44×
- More babies than then
- Share of its own peak
- 84.6%
- Peak was 2023 (26)
- Years since peak
- 2
- Years
- Year-to-year steadiness
- Shifting
- 24.1% average annual change
Spellings of Kaio
Kaio is not the most common spelling — Mario is, with 20.5% against Kaio's 0.06%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Where Kaio is used
Across 1910–2025, Kaio was most concentrated in Massachusetts — about 1 in 100,000 boys, against 1 in 349,621 across all states with data. It was least common in California (1 in —).
Most concentrated
- 1Massachusetts1 in 100,000
- 2California1 in —
Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Kaio has too little recent state data to map, so this covers all years from 1910.
Kaio around the world
Where Kaio ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- England & Wales2010–2025#1,897in 2025
- Ireland2024–2024#785in 2024
Popularity data from Office for National Statistics and Central Statistics Office. ONS data under Open Government Licence v3.0. CSO data under CC BY 4.0.
Kaio by the numbers
The raw record for each sex the name is used for.
Names similar to Kaio
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Kaio
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.