Caio vs Cairo

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

Name A

Caio

Boy name · Rank #3737

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Name B

Cairo

Boy name · Rank #355

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Which name is more popular?

Metric Caio Cairo
Current Rank #3737 #355
Total Births (all years) 687 8,444
Peak Year 2023 2022
Peak Year Births 40 1,101
Peak Decade 2010ss 2020ss
Gender Boy Boy
First Recorded Year 1990 1979

Births by Decade

Decade Caio Cairo
1970ss — 6
1980ss — 18
1990ss 73 97
2000ss 209 344
2010ss 250 2,986
2020ss 155 4,993

Recent Annual Births (2014–present)

Year Caio Cairo
2014 21 173
2015 23 223
2016 11 267
2017 24 404
2018 32 543
2019 34 975
2020 24 918
2021 32 1,020
2022 29 1,101
2023 40 1,010
2024 30 944

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, 1990–2024.

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