Cydney
Cydney was the 10273rd most popular name for girls in 2025, given to 9 babies. Its best year was 1997, when it ranked 915th; the most babies were born in 1998 (227). Over the last ten years it has moved down 6,558 places. More babies were named Cydney in the 1990s than in any other decade.
Meaning (as Sydney) wide island (English place name) · Old English
- Rank in 2025
- #10,273 girls, down 5,484 places since 2020
- Babies in 2025
- 9girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 1998227 babies
- Total since 1880
- 5,170babies recorded
What does the name Cydney mean?
Cydney is a spelling of Sydney, pronounced the same way, so it shares Sydney's meaning and origin.
Sydney is a spelling of the English surname Sidney. Wiktionary derives it from a place in Surrey, Old English sīd, "wide", and ēg, "island" or dry ground in a marsh. Bardsley (1901) accepted the older story that the family came from Saint-Denis in France; modern sources no longer support that. The cities in Australia and Canada are named after Viscount Sydney, not directly for the meaning.
sīd (Old English, “wide”)ēg (Old English, “island, raised land in marsh”)
How sure is this? Probable.
Other explanations you may read: contraction of Saint-Denis.
Related names: Sidney, Syd, Sydnee.
See also: English names, names that mean meadow, hill or valley, names from places.
Sources for this meaning
- Wiktionary, entry 'Sydney', Wiktionary (Wikimedia Foundation)
- Wiktionary, entry 'Sidney', Wiktionary (Wikimedia Foundation)
- Charles W. Bardsley, A Dictionary of English and Welsh Surnames, with Special American Instances (1901), s.v. 'Sidney', Henry Frowde (public domain; Internet Archive scan)
Cydney popularity since 1880
A few boys are given the name too: 25 since 1995.
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #10,273 | 9 |
| 2020 | #4,789 | 27 |
| 2010 | #2,278 | 84 |
| 2000 | #948 | 225 |
| 1990 | #1,505 | 103 |
| 1980 | #4,025 | 19 |
| 1970 | #2,870 | 24 |
| 1960 | #2,067 | 31 |
| 1950 | #1,503 | 38 |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Cydney, counting every spelling?
Cydney is a spelling of Sydney, a name family that ranked #361 for girls in 2025 once every spelling is counted together, compared with #10,273 for Cydney on its own. Together these spellings went to 913 girls in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Sydney | 873 | #348 | 5,380 |
| Sydnee | 14 | #7,852 | 112 |
| Cydney | 9 | #10,273 | 77 |
| Sydnie | 9 | #10,824 | 71 |
| Sydni | 8 | #11,816 | 60 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Cydney?
9 of the 3,606,400 babies born in the US in 2025 were named Cydney (0.00 per 1,000 births). For a girl named Cydney born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 930 (of 430 pupils) would have a child named Cydney.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Cydney?
About 4,900 people born in the US named Cydney are alive today, with a median age of 29; half are between 22 and 36. That makes Cydney mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Names with a similar history
These names rose and fell in step with Cydney: their share of US girls followed the most similar curve since 1880. If you like Cydney, they share its era and feel.
Questions about the name Cydney
What does Cydney mean?
Cydney is a spelling of Sydney, which means “wide island (English place name)” (Old English origin). Certainty: probable.
How popular is the name Cydney?
Cydney was the 10273rd most popular name for girls in 2025, given to 9 babies. Its best year was 1997, when it ranked 915th; the most babies were born in 1998 (227). Over the last ten years it has moved down 6,558 places. More babies were named Cydney in the 1990s than in any other decade.
Is Cydney a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Cydney in the US.