How Many People Are Named Sydney?
people named Sydney are alive in the United States today (estimate)
About 1 in 1,916 people in the US has this name
Based on 187,700 babies named Sydney in Social Security records from 1880 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
⭐ Uncommon
Peak Year
10,369 births
Trend
Declining (last 10 years)
📖 Name Origin & Meaning
Meaning:
From a surname which was a variant of the surname SIDNEY. This is the name of the largest city in Australia, which was named for Thomas Townshend, 1st Viscount Sydney in 1788. Since the 1990s this name has been mainly feminine.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
Same Sound, Other Spellings
These names are pronounced like Sydney in English. Counting Sydney and these spellings together, about 233,849 people alive in the US have the name.
⚧ Gender Distribution
Of the babies given the name Sydney, 97.4% were girls and 2.6% were boys. The share of girls among babies named Sydney rose from 9.3% in the 1880s to 97.3% in the 2020s.
👥 Age Distribution
The average person named Sydney alive today is about 23 years old, and 81% are under 30. Half of them were between 17 and 28 in 2025.
📈 Popularity Over Time
Sydney first appears in the records in 1880 and was given most often in 2000, to 10,369 babies. In 2025, 893 babies got the name. Over the last ten years, the number each year has been falling.
Babies given the name each year, 1880 to 2025
🏆 Rank History
Sydney never made the top 10 girls' names. Its best rank was #23, in 1999 to 2002, and it was in the top 100 for 20 years, 1994 to 2013. In 2025 it ranked #348.
| Girls | |
|---|---|
| Rank in 2025 | #348 |
| Best rank | #23 (1999 to 2002) |
| Years in the top 100 | 20 (1994 to 2013) |
| Rank in its biggest decade | #28 in the 2000s |
📍 State-Wise Distribution
People named Sydney alive today, by the state where they were born (estimate; state records start in 1910).
More people named Sydney were born in California than in any other state: about 16,860 of those alive today. Compared with the national rate in the same years, Sydney was given 1.8 times as often in North Dakota, 1.8 times in South Dakota and 1.6 times in District of Columbia.
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