Kayo
Kayo was given to 11 boys in 2025, #7,429 among boys’ names; 284 Americans have been recorded with it since 1926 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kayo by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kayo?
#7,429 among boys’ names, 2025
Kayo fell from #7,305 in 2015 to #7,429 in 2025 among boys’ names, although its share of boys born rose from 5.7 to 6.4 per million.
20 babies in 2009, the peak
Kayo peaked in 2009, when 20 boys were given it, #4,841 among boys’ names. The 11 births of 2025 are 55% of that peak.
Births by sex.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 11 | #7,429 | 6.4 |
| 2024 | 13 | #6,643 | 7.5 |
| 2023 | 13 | #6,716 | 7.6 |
| 2022 | 13 | #6,659 | 7.4 |
| 2021 | 13 | #6,504 | 7.4 |
| 2020 | 5 | #13,101 | 2.9 |
| 2019 | 5 | #13,153 | 2.8 |
| 2018 | 13 | #6,531 | 7.2 |
| 2017 | 10 | #7,873 | 5.4 |
| 2016 | 8 | #9,284 | 4.2 |
Every recorded year (28)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 11 | #7,305 | 5.7 |
| 2014 | 9 | #8,473 | 4.7 |
| 2013 | 11 | #7,298 | 5.8 |
| 2012 | 15 | #5,847 | 7.9 |
| 2011 | 11 | #7,251 | 5.8 |
| 2010 | 9 | #8,460 | 4.7 |
| 2009 | 20 | #4,841 | 10.1 |
| 2008 | 14 | #6,257 | 6.9 |
| 2007 | 14 | #6,102 | 6.7 |
| 2006 | 12 | #6,685 | 5.8 |
| 2005 | 9 | #7,995 | 4.5 |
| 2004 | 6 | #10,677 | 3.0 |
| 2003 | 7 | #9,171 | 3.5 |
| 2002 | 7 | #8,938 | 3.6 |
| 2001 | 5 | #11,485 | 2.6 |
| 1995 | 5 | #9,600 | 2.6 |
| 1948 | 5 | #3,939 | 2.8 |
| 1926 | 5 | #4,523 | 4.5 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Kayo a boy’s or a girl’s name?
Of the 284 Americans recorded as Kayo, 2% are girls and 98% boys. In 2025 it went to 11 boys; SSA lists no girls with it that year (fewer than 5, or none).
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Kayo: the SSA national file counts each sex separately.
How many people are named Kayo, and how old are they?
An estimated 274 Americans named Kayo and born in the U.S. are alive in 2026 (96% of everyone recorded); the median is 14 years old and half are between 7 and 19. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 797 people named Kayo (542 women and girls, 255 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 209 born in the U.S. The Census count is 3.8 times that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 8 names spelled alike, given to 90,988 babies since 1880, Kayo is the eighth most given (<1% of them). In 2025 it was given to 11 of their 5,235 babies (<1%), the sixth most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Kayo
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Kayo and names like it
- Compare Kayo and KaiBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sKayo peaked in 2009.
- The top names of 2009The year the most babies were named Kayo.
- The names of Generation AlphaMost people named Kayo alive today were born 2013-2025.
- Names starting with KMost given first.