Sydnei
Every Sydnei since 1988 — 635 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Sydnei
Sydnei is not currently in use for newborns in the United States — fewer than five babies received the name in 2025. Its story lives in the historical record below.
Since 1988, 635 American babies have been named Sydnei. Its peak came in 2005, when 37 newborns received the name — the signature sound of the 2000s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Sydnei stood among all girls' names in any year, or use the compare tool to plot it against other names.
Sydnei year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Girls | Girls rank |
|---|---|---|
| 2025 | — | — |
| 2024 | — | — |
| 2023 | — | — |
| 2022 | — | — |
| 2021 | — | — |
| 2020 | 8 | #12,027 |
| 2019 | 5 | #17,686 |
| 2018 | 6 | #15,462 |
| 2017 | 14 | #8,252 |
| 2016 | 12 | #9,366 |
| 2015 | 14 | #8,388 |
| 2014 | 16 | #7,599 |
| 2013 | 11 | #10,171 |
| 2012 | 14 | #8,578 |
| 2011 | 19 | #6,820 |
| 2010 | 19 | #6,876 |
| 2009 | 23 | #6,069 |
| 2008 | 30 | #4,995 |
| 2007 | 16 | #8,053 |
| 2006 | 31 | #4,675 |
| 2005 | 37 | #3,937 |
| 2004 | 36 | #3,981 |
| 2003 | 26 | #4,928 |
| 2002 | 20 | #5,878 |
| 2001 | 30 | #4,192 |
| 2000 | 25 | #4,772 |
| 1995 | 27 | #3,962 |
| 1990 | 9 | #9,161 |
| 1985 | — | — |
| 1980 | — | — |
| 1975 | — | — |
| 1970 | — | — |
| 1965 | — | — |
| 1960 | — | — |
| 1955 | — | — |
| 1950 | — | — |
| 1945 | — | — |
| 1940 | — | — |
| 1935 | — | — |
| 1930 | — | — |
| 1925 | — | — |
| 1920 | — | — |
| 1915 | — | — |
| 1910 | — | — |
| 1905 | — | — |
| 1900 | — | — |
| 1895 | — | — |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Frequently asked questions
How popular is the name Sydnei in 2025?
Sydnei did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.
How many people are named Sydnei?
635 babies have been named Sydnei in the United States since 1988, based on Social Security card applications.
When was the name Sydnei most popular?
Sydnei peaked in 2005, when 37 newborns received the name.
Is Sydnei a boy or girl name?
Sydnei is overwhelmingly a girl's name — 100% of babies with the name.
Is the name Sydnei rising or falling?
Sydnei is declining — less popular now than a decade ago.