Sly vs Slyvester

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

Name A

Sly

Boy name

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Name B

Slyvester

Boy name

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Which name is more popular?

Metric Sly Slyvester
Current Rank Unranked Unranked
Total Births (all years) 101 151
Peak Year 2025 1959
Peak Year Births 10 9
Peak Decade 1990ss 1960ss
Gender Boy Boy
First Recorded Year 1973 1927

Births by Decade

Decade Sly Slyvester
1920ss — 12
1930ss — 5
1940ss — 12
1950ss — 26
1960ss — 41
1970ss 12 40
1980ss 5 5
1990ss 25 10
2000ss 11 —
2010ss 24 —
2020ss 24 —

Recent Annual Births (2014–present)

Year Sly Slyvester
2016 6 —
2019 5 —
2021 8 —
2022 6 —
2025 10 —

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, 1973–2025.

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