Kaius vs Kai

Side-by-side comparison of Kaius and Kai — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Kaius

Boy name · Rank #1136

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Name B

Kai

Boy name · Rank #76

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Which name is more popular?

Metric Kaius Kai
Current Rank #1136 #76
Total Births (all years) 1,793 66,409
Peak Year 2020 2022
Peak Year Births 201 5,366
Peak Decade 2020ss 2010ss
Gender Boy Boy
First Recorded Year 2005 1926

Births by Decade

Decade Kaius Kai
1920ss — 6
1930ss — 6
1940ss — 10
1950ss — 148
1960ss — 341
1970ss — 593
1980ss — 960
1990ss — 2,639
2000ss 54 12,620
2010ss 807 25,976
2020ss 932 23,110

Recent Annual Births (2014–present)

Year Kaius Kai
2014 85 2,411
2015 110 2,852
2016 114 2,895
2017 94 3,155
2018 115 3,462
2019 169 3,741
2020 201 3,863
2021 179 4,638
2022 177 5,366
2023 189 4,967
2024 186 4,276

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 2005–2024.

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