Londynn
Feminine
Londynn respells London, and the city's name is pre-Roman and unrecovered — the best modern guess is a Celtic Londinion, possibly from a personal name.
How old is the name Londynn?
Londynn first appears in US birth records in 2004 — 21 years ago. The typical Londynn is a kid of about 8 — this name's wave is very recent. About 3,100 people named Londynn are estimated to be alive in the US today.
When was the name Londynn most popular?
Londynn peaked in 2020, reaching #1055 nationally. Today it ranks #1777, 722 places below that high. See the whole 2020 chart.
Lists built from the same records:
Where it comes from
From Londinium to Londynn
The story of Londynn
Londinium was founded by the Romans around AD 47 and burned by Boudica within fifteen years. Place-names rose in American naming from the 2000s, and London became a girls' name in significant numbers. The -ynn respellings followed the wider fashion, and Londynn appears in the registers in the 2010s in current use.
Meaningnot established
Not established
London's name is genuinely unrecovered. Roman Londinium is the earliest form, and it appears to be pre-Roman Brittonic. Proposals include a personal name Londinos, 'the bold one', and a river word. Older folk derivations from a King Lud are not supported. Nothing is settled.
How the name formed
- Londinium
- London
- Londynn
Related forms: London · Londyn · Londinium
Pronouncing Londynn
LUN-din
Two syllables, stress on the first. Londynn and London are said identically.
Nicknames for Londynn
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
- 2004
- Most girls named
- 2015246 — the highest on record
- Peak rank
- #1055reached in 2020
- Change vs 2024
- −19.3%113 in 2025, from 140
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.
Londynn in other languages
The same name elsewhere
- London in English — spelling variant
- Londyn in English — spelling variant
- Londinium in Latin — related form
Strongest US states over the last decade: Texas, Georgia, California.
Londynns among us
people named Londynn are estimated to be alive in the US today
About 1 girl in 14,224 born in 2025 was named Londynn
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Londynn
- #1777
- Londynn on the 2025 chart
- #339
- counting every spelling
The SSA counts spellings, not names. Londynn went to 113 girls in 2025, but Londyn is the same name said out loud. Together the 2 spellings went to 912, which makes it the 339th most-given girls’ name of the year — 1,438 places above the chart.
- Londyn799
- Londynn113
About 1 girl in 1,762 born in 2025 was given one of these spellings — against 1 in 14,224 for Londynn 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
The Janetta test
Every popular name lives one long story — a climb, a peak, a slow settling back. Londynn's later chapters haven't been written yet, so we borrowed them: Janetta climbed just as high around 1935, and its whole arc is on record. Line the two peaks up, and Janetta's path sketches the road Londynn is walking now.
Londynn 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 Londynn is headed
Londynn is easing off slowly — about 15% fewer babies a year by 2030 if the trend continues.
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.
Londynn beside its neighbors
The names ranked closest to Londynn in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- A city with two thousand years of continuous documented history stands behind it.
- Two clean syllables with no pronunciation risk.
- Lon and Lonnie are two short forms with real use.
- The city's own name is genuinely unrecovered.
- London is the standard spelling and will be assumed.
- The -ynn will need dictating every time.
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What they receive
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Londynn
Feminine · #1777 in the U.S.
Frequently asked
- How many Londynns are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 3,100 people named Londynn are estimated to be alive in the US today.
- How do you spell Londynn?
- Londynn is one of 2 recorded spellings. Londyn is the more common one — 799 births in 2025 against 113 for Londynn.
- How popular is the name Londynn in 2025?
- Londynn ranks #1777 among US girl names in 2025, with 113 babies given the name.
- How rare is the name Londynn?
- About 1 in every 14,224 US girls born in 2025 was named Londynn — 113 in all.
- Will my child share the name Londynn with classmates?
- Londynn will almost certainly be the only one in school.
Ranked beside Londynn
Names sitting at a similar level of popularity right now.
Adore#1777 · Tess#1777 · Arizbeth#1777 · Jalayah#1777 · Katarina#1777 · Cosette#1777 · Yesly#1777 · Ronnie#1777
Looking for what else is popular rather than what resembles Londynn? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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