Caius vs Cairo

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

Name A

Caius

Boy name · Rank #1062

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Name B

Cairo

Boy name · Rank #355

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Which name is more popular?

Metric Caius Cairo
Current Rank #1062 #355
Total Births (all years) 2,074 8,444
Peak Year 2024 2022
Peak Year Births 205 1,101
Peak Decade 2010ss 2020ss
Gender Boy Boy
First Recorded Year 1994 1979

Births by Decade

Decade Caius Cairo
1970ss — 6
1980ss — 18
1990ss 12 97
2000ss 205 344
2010ss 1,068 2,986
2020ss 789 4,993

Recent Annual Births (2014–present)

Year Caius Cairo
2014 124 173
2015 138 223
2016 153 267
2017 110 404
2018 130 543
2019 137 975
2020 156 918
2021 138 1,020
2022 150 1,101
2023 140 1,010
2024 205 944

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, 1994–2024.

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