Sydni
Sydni was the 11816th most popular name for girls in 2025, given to 8 babies. Its best year was 2000, when it ranked 559th with 468 babies. Over the last ten years it has moved down 8,121 places. More babies were named Sydni in the 2000s than in any other decade.
Meaning (as Sydney) wide island (English place name) · Old English
- Rank in 2025
- #11,816 girls, down 7,071 places since 2020
- Babies in 2025
- 8girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 2000468 babies
- Total since 1880
- 5,361babies recorded
What does the name Sydni mean?
Sydni 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)
Sydni popularity since 1880
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #11,816 | 8 |
| 2020 | #4,745 | 28 |
| 2010 | #1,937 | 104 |
| 2000 | #559 | 468 |
| 1990 | #1,668 | 89 |
| 1980 | — | — |
| 1970 | #9,158 | 5 |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Sydni, counting every spelling?
Sydni is a spelling of Sydney, a name family that ranked #361 for girls in 2025 once every spelling is counted together, compared with #11,816 for Sydni 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 Sydni?
8 of the 3,606,400 babies born in the US in 2025 were named Sydni (0.00 per 1,000 births). For a girl named Sydni 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 1,057 (of 430 pupils) would have a child named Sydni.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Sydni?
About 5,300 people born in the US named Sydni are alive today, with a median age of 25; half are between 21 and 29. That makes Sydni 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 Sydni: their share of US girls followed the most similar curve since 1880. If you like Sydni, they share its era and feel.
Questions about the name Sydni
What does Sydni mean?
Sydni is a spelling of Sydney, which means “wide island (English place name)” (Old English origin). Certainty: probable.
How popular is the name Sydni?
Sydni was the 11816th most popular name for girls in 2025, given to 8 babies. Its best year was 2000, when it ranked 559th with 468 babies. Over the last ten years it has moved down 8,121 places. More babies were named Sydni in the 2000s than in any other decade.
Is Sydni a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Sydni in the US.