Costello vs Cosmo

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

Name A

Costello

Boy name

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Name B

Cosmo

Boy name · Rank #1688

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Which name is more popular?

Metric Costello Cosmo
Current Rank Unranked #1688
Total Births (all years) 61 2,869
Peak Year 1951 2022
Peak Year Births 11 99
Peak Decade 1950ss 1920ss
Gender Boy Boy
First Recorded Year 1942 1910

Births by Decade

Decade Costello Cosmo
1910ss — 254
1920ss — 452
1930ss — 286
1940ss 5 191
1950ss 23 191
1960ss — 121
1970ss 11 128
1980ss — 108
1990ss — 172
2000ss 12 254
2010ss 5 282
2020ss 5 430

Recent Annual Births (2014–present)

Year Costello Cosmo
2014 — 14
2015 — 32
2016 — 21
2017 — 42
2018 — 41
2019 — 49
2020 — 60
2021 5 78
2022 — 99
2023 — 94
2024 — 99

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, 1942–2021.

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