Sidney
Masculine · “From an English place name”
Sidney is given to both — 84,202 boys and 24,785 girls since 1880. See Sidney as a girl nameSee other names given to both
Sidney began as an English place-and-family name, carried into the front of the name by the Elizabethan Sidneys — among them the poet and courtier Sir Philip Sidney, who died in 1586. It has been given to children continuously since the nineteenth century, and it still comes with one of the shortest, sturdiest nicknames in English: Sid.
How old is the name Sidney?
Sidney was already in use when US birth records began in 1880 — it is at least 145 years old. The typical Sidney alive today was born around 1939, making them about 86 years old. About 35,000 people named Sidney are estimated to be alive in the US today.
When was the name Sidney most popular?
Sidney peaked in 1912, reaching #80 nationally. Today it ranks #1323, 1,243 places below that high. See the whole 1912 chart.
Where it comes from
From Old English sīd + ēg ('wide island') to Sidney
The story of Sidney
Sidney is a surname first and a given name second. It belonged to an English family prominent from the Tudor period onward, and by the eighteenth century parents in Britain and then America had begun using such surnames as first names for sons — a fashion that also gave us Percy, Stanley and Howard. The Sydney spelling grew from the same root and traveled further: the Australian city was named in the 1780s for Thomas Townshend, Viscount Sydney. In the United States, Sidney settled in as a boy's name and stayed there, while Sydney drifted over the twentieth century toward girls.
Meaningscholars disagree
From an English place name, most likely 'wide island' or 'wide water-meadow'
The mainstream reading traces the surname to English places named from Old English sīd 'wide' plus ēg 'island, well-watered land' — a wide riverside meadow. An older explanation derived it from the Norman place Saint-Denis; that reading still appears in name books but has fallen out of favor with surname scholars.
How the name formed
- Old English sīd + ēg'wide island'
- SidneyEnglish place name
- SidneyEnglish surname
- Sidneygiven name
- Sydneyvariant spelling
Related forms: Sydney · Sidnei · Sidney · Cydney
Pronouncing Sidney
SID-nee
Two syllables, stress on the first. Sidney and Sydney are pronounced identically, which is exactly why the spelling has to be spoken aloud.
Nicknames for Sidney
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1880
- Most boys named
- 19181,879 — the highest on record
- Peak rank
- #80reached in 1912
- Change vs 2022
- −12.0%146 in 2025, from 166
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Sidney in other languages
The same name elsewhere
- Sydney in English — spelling variant
- Sidnei in Portuguese (Brazil) — spelling variant
- Sidney in French — same name
- Cydney in English — spelling variant
Strongest US states over the last decade: California, New York, Texas.
Sidneys among us
people named Sidney are estimated to be alive in the US today
About 1 boy in 11,699 born in 2025 was named Sidney
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Sidney
- #1323
- Sidney on the 2025 chart
- #762
- counting every spelling
The SSA counts spellings, not names. Sidney went to 146 boys in 2025, but Sydney is the same name said out loud. Together the 2 spellings went to 166, which makes it the 762nd most-given boys’ name of the year — 561 places above the chart.
- Sidney146
- Sydney20
About 1 boy in 10,290 born in 2025 was given one of these spellings — against 1 in 11,699 for Sidney itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
Fashion outlook
Sidney sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Sidney is headed
Sidney should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
Medium confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Sidney beside its neighbors
The names ranked closest to Sidney in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- Instantly readable to English speakers, with a pronunciation nobody has to be taught.
- Comes with Sid, a short form in unbroken use for generations and solid enough to stand alone.
- An unbroken record as a given name since the nineteenth century, never fashionable enough to date sharply.
- Works on a form, a nameplate and a playground equally well — one clear stress, no vowel guesswork.
- Sidney and Sydney sound the same, and Sydney is now given far more often to girls in the US. Expect a lifetime of spelling it out, and occasional assumptions about which name it is before the person is seen.
- Among people alive today the name skews strongly toward older generations, so it may read as a grandparent's name to some ears — one reason it is uncommon in kindergartens now.
- A child named Sidney is unlikely to meet another at school. That means no surname initial ever needed, and also a name that will be commented on more than most.
Nobody names a baby alone.
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What they receive
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Sidney
Masculine · #1323 in the U.S.
Frequently asked
- How many Sidneys are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 35,000 people named Sidney are estimated to be alive in the US today.
- How do you spell Sidney?
- Sidney is the most-used spelling in US records — 146 of the 166 babies given the name in 2025. The others recorded are Sydney.
- How popular is the name Sidney in 2025?
- Sidney ranks #1323 among US boy names in 2025, with 146 babies given the name.
- How rare is the name Sidney?
- About 1 in every 11,699 US boys born in 2025 was named Sidney — 146 in all.
- Will my child share the name Sidney with classmates?
- Sidney will almost certainly be the only one in school.
Ranked beside Sidney
Names sitting at a similar level of popularity right now.
Lucio#1323 · Bryant#1323 · Eros#1323 · Hans#1323 · Gus#1328 · Gilbert#1328 · Sanad#1328 · Elvis#1328
Looking for what else is popular rather than what resembles Sidney? See the current top 100.
Choosing between Sidney and another name?
See them side by side — full stats, history and a gentle verdict.
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Weighing a whole shortlist? Add the rest in the builder, or settle it with a bracket.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
US figures from the Social Security Administration. 1880–2025. Data & methodology
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