Cairo vs Caius

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

Name A

Cairo

Boy name · Rank #355

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Name B

Caius

Boy name · Rank #1062

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Which name is more popular?

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

Births by Decade

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

Recent Annual Births (2014–present)

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

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, 1979–2024.

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