Londyn
Masculine
Londyn is given to girls far more often — 27,245 girls against 532 boys since 1880. See Londyn as a girl name
London is the most examined place name in Britain and nobody knows what it means. Fifteen hundred years of scholarship have produced Celtic candidates, pre-Celtic candidates and a personal name, and the honest answer is still that the largest city in Europe is named something we cannot read.
How old is the name Londyn?
Londyn first appears in US birth records in 2001 — 24 years ago. The typical Londyn is a kid of about 10 — this name's wave is very recent. About 500 people named Londyn are estimated to be alive in the US today.
When was the name Londyn most popular?
Londyn peaked in 2020, reaching #2846 nationally. Today it ranks #6446, 3,600 places below that high. See the whole 2020 chart.
Lists built from the same records:
Where it comes from
From Londinium to Londyn
The story of Londyn
The Romans founded a settlement on the Thames around AD 47 and called it Londinium, taking the name from something already there. The city then survived every collapse and rebuilding of the last two thousand years and kept the name through all of them, and the etymology is the piece that did not survive. Its use as a given name is American and very recent, arriving with a wave of city and country names in the 2000s; the y respelling followed within a few years, and it is used on both sexes, though far more on girls. The male side of Londyn is small and its best year is 2020, one of the most recent peaks on the whole site.
Meaningnot established
Not established
Roman Londinium is the earliest recorded form. Proposed explanations include a Celtic personal name Londinos, a root meaning wild or bold, a word for a flowing river, and a pre-Celtic substrate word from a language lost before Britain was written about. None of them commands agreement, and the standard scholarly position is that the name's origin is not recovered. The y in this spelling is a modern American substitution.
How the name formed
- Londinium
- London
- Londyn
Related forms: London · Londinium · Londres
Pronouncing Londyn
LUN-dun
Two syllables with the stress on the first, exactly as the city is said. The y makes no difference to the sound at all.
Nicknames for Londyn
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
- 2001
- Most boys named
- 202042 — the highest on record
- Peak rank
- #2846reached in 2020
- Change vs 2024
- −38.1%13 in 2025, from 21
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.
Londyn in other languages
The same name elsewhere
- London in English — spelling variant
- Londinium in Latin — related form
- Londres in French — related form
Strongest US states over the last decade: Georgia, Florida, Texas.
Londyns among us
people named Londyn are estimated to be alive in the US today
About 1 boy in 131,390 born in 2025 was named Londyn
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
The Iram test
Every popular name lives one long story — a climb, a peak, a slow settling back. Londyn's later chapters haven't been written yet, so we borrowed them: Iram climbed just as high around 2003, and its whole arc is on record. Line the two peaks up, and Iram's path sketches the road Londyn is walking now.
Londyn 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
Londyn beside its neighbors
The names ranked closest to Londyn in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- One of the most recognizable place names in the world behind it.
- Lon and Lo are both usable and belong to different generations.
- The y marks it visually as a given name rather than a city.
- It is used far more for girls than boys in the United States.
- London is the standard spelling of the place and will be written instead.
- The name's own meaning is genuinely unknown and cannot be supplied.
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What they receive
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Londyn
Masculine · #6446 in the U.S.
Frequently asked
- How many Londyns are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 500 people named Londyn are estimated to be alive in the US today.
- How popular is the name Londyn in 2025?
- Londyn ranks #6446 among US boy names in 2025, with 13 babies given the name.
- How rare is the name Londyn?
- About 1 in every 131,390 US boys born in 2025 was named Londyn — 13 in all.
- Will my child share the name Londyn with classmates?
- Londyn will almost certainly be the only one in school.
Ranked beside Londyn
Names sitting at a similar level of popularity right now.
Rollie#6446 · Billie#6446 · Worth#6446 · Blas#6446 · Starling#6446 · Alvis#6446 · Elwyn#6446 · Rollin#6446
Looking for what else is popular rather than what resembles Londyn? See the current top 100.
Choosing between Londyn and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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