How Many People Are Named Sidney?
people named Sidney are alive in the United States today (estimate)
About 1 in 6,159 people in the US has this name
Based on 108,987 babies named Sidney in Social Security records from 1880 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎 Rare
Peak Year
1,939 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
From the English surname SIDNEY. It was first used as a given name in honour of executed politician Algernon Sidney (1622-1683). Another notable bearer of the surname was the poet and statesman Sir Philip Sidney (1554-1586).
Source of the meaning, origin, pronunciation and related names: Behind the Name.
Same Sound, Other Spellings
These names are pronounced like Sidney in English. Counting Sidney and these spellings together, about 233,849 people alive in the US have the name.
⚧ Gender Distribution
Of the babies given the name Sidney, 39.4% were girls and 60.6% were boys. The share of girls among babies named Sidney rose from 7% in the 1880s to 47.5% in the 2020s. It was highest in the 2000s, at 75.5%.
👥 Age Distribution
The average person named Sidney alive today is about 43 years old, and 42% are under 30. Half of them were between 23 and 65 in 2025.
📈 Popularity Over Time
Sidney first appears in the records in 1880 and was given most often in 1918, to 1,939 babies. In 2025, 251 babies got the name.
Babies given the name each year, 1880 to 2025
🏆 Rank History
Sidney never made the top 10 boys' names. Its best rank was #80, in 1912, and it was in the top 100 in 16 years between 1880 and 1919. In 2025 it ranked #1,327. Among girls, its best rank was #258, in 1999.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #1,327 | #1,878 |
| Best rank | #80 (1912) | #258 (1999) |
| Years in the top 100 | 16 (1880 to 1919) | None |
| Rank in its biggest decade | #125 in the 1920s | #379 in the 2000s |
📍 State-Wise Distribution
People named Sidney alive today, by the state where they were born (estimate; state records start in 1910).
More people named Sidney were born in Texas than in any other state: about 4,491 of those alive today. Compared with the national rate in the same years, Sidney was given 3.1 times as often in Louisiana, 2 times in Mississippi and 1.5 times in Alabama.
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