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 #1060

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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 #1060 #355
Total Births (all years) 2,329 9,415
Peak Year 2025 2022
Peak Year Births 254 1,101
Peak Decade 2010s 2020s
Gender Boy Boy
First Recorded Year 1994 1979

Births by Decade

Decade Caius Cairo
1970s - 6
1980s - 18
1990s 12 97
2000s 205 344
2010s 1,068 2,987
2020s 1,044 5,963

Recent Annual Births (2014–present)

Year Caius Cairo
2014 124 173
2015 138 223
2016 153 267
2017 110 404
2018 130 543
2019 137 976
2020 156 918
2021 138 1,020
2022 150 1,101
2023 140 1,010
2024 206 949
2025 254 965

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, 1994–2025.

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