Declining since 1997, #10,107 for girls today.
Popularity of Cydney since 1942
Babies named Cydney per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1940s | 49 |
| 1950s | 333 |
| 1960s | 313 |
| 1970s | 196 |
| 1980s | 438 |
| 1990s | 1,761 |
| 2000s | 1,431 |
| 2010s | 520 |
| 2020s | 104 |
Meaning & origin
Cydney entered the U.S. naming charts in 1942, but it was not until the 1990s that it saw significant use. Its peak year came in 1998, when the name reached its highest rank. Since 1997, the name has been on a declining trajectory, mirroring the broader retreat of similar creative spellings of established names. In 2025, Cydney ranked 10,107, with a frequency of 1 in 178,585 newborns. The name has not been recorded in any top state rankings, suggesting its use is geographically diffuse. Cydney is a phonetic respelling of Sydney, a name that itself has ancient ties to a French place name but was popularized in English via the surname. The spelling with a 'C' reflects a late-20th-century trend toward distinctive yet recognizable variations.
Cydney is a modern spelling variant of Sydney, which derives from a French place name (Saint-Denis) via the English surname. The surname originally referred to someone from the town of Saint-Denis in France. Over time, Sydney and its phonetic spellings like Cydney emerged as a given name, gaining popularity in the English-speaking world particularly in the late 20th century.
Where Cydney is most popular
Births per 100,000 girls by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.
Nicknames & variants
Nicknames: Cyd
Sibling names for Cydney
Names that share Cydney's style, for a brother or sister.
