Sydney
Gender: Girl
Meaning: Wide island, St. Denis
Origin: English/French
Popularity: Ranked #348 in 2025 with 873 babies born.
History: From the Old English meaning wide island, or from the French Saint Denis. The Australian city of Sydney is its most famous geographic association. It has been popular for girls in the US since the 1990s.
Name length: 6 letters
How common is Sydney? About 1 in 3,727 babies born in 2025 were named Sydney, or roughly 2.4 per day in the United States.
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Frequently asked about Sydney
What does the name Sydney mean?
Sydney means “Wide island, St. Denis” from English/French roots.
What is the origin of the name Sydney?
Sydney has English/French origin. The traditional meaning is “Wide island, St. Denis”.
How popular is Sydney?
Sydney ranked #348 in 2025 — given to 873 babies that year.
When was Sydney most popular?
Sydney peaked in 2000 with 10,243 babies registered that year.
Is Sydney a boy or girl name?
Sydney is predominantly a girls' name — over 90% of Sydneys in registered births are female.
Is the name Sydney rising or falling in popularity?
Sydney has fallen 107 spots in the rankings over the last 5 years — from #241 in 2020 to #348 in 2025.
How long has Sydney been recorded?
Sydney appears in birth records across 146 years — from 1880 through 2025.