Kj
Masculine
Kj entered the US charts in 1993, peaked at #4628 in 2021, ranks #6803 in 2025 — given to only a few children a year.
How old is the name Kj?
Kj first appears in US birth records in 1993 — 32 years ago. The typical Kj is a kid of about 7 — this name's wave is very recent. About 200 people named Kj are estimated to be alive in the US today.
When was the name Kj most popular?
Kj peaked in 2021, reaching #4628 nationally. Today it ranks #6803, 2,175 places below that high. See the whole 2021 chart.
Kj appears on this list:
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
- 1993
- Most boys named
- 202121 — the highest on record
- Peak rank
- #4628reached in 2021
- Change vs 2024
- −29.4%12 in 2025, from 17
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.
Kjs among us
people named Kj are estimated to be alive in the US today
About 1 boy in 142,340 born in 2025 was named Kj
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kj
- #6803
- Kj on the 2025 chart
- #889
- counting every spelling
The SSA counts spellings, not names. Kj went to 12 boys in 2025, but Cj is the same name said out loud. Together the 2 spellings went to 39, which makes it the 889th most-given boys’ name of the year — 5,914 places above the chart.
- Cj27
- Kj12
About 1 boy in 43,797 born in 2025 was given one of these spellings — against 1 in 142,340 for Kj 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 Naithan test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kj's later chapters haven't been written yet, so we borrowed them: Naithan climbed just as high around 2005, and its whole arc is on record. Line the two peaks up, and Naithan's path sketches the road Kj is walking now.
Kj 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
Kj beside its neighbors
The names ranked closest to Kj in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
Nobody names a baby alone.
Put Kj to the vote.
Add it to a family vote or a couple’s swipe deck — the other person gets one card, a simple answer and room to say why. No app, no account for them.
Only the people you invite can see your list.
Already decided on Kj? Hide it among decoys and let them guess.
What they receive
Someone added a name to your list
Kj
Masculine · #6803 in the U.S.
Frequently asked
- How many Kjs are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 200 people named Kj are estimated to be alive in the US today.
- How do you spell Kj?
- Kj is one of 2 recorded spellings. Cj is the more common one — 27 births in 2025 against 12 for Kj.
- How popular is the name Kj in 2025?
- Kj ranks #6803 among US boy names in 2025, with 12 babies given the name.
- How rare is the name Kj?
- About 1 in every 142,340 US boys born in 2025 was named Kj — 12 in all.
- Will my child share the name Kj with classmates?
- Kj will almost certainly be the only one in school.
Ranked beside Kj
Names sitting at a similar level of popularity right now.
Zeb#6803 · Buster#6803 · Fabien#6803 · Eston#6803 · Tyjuan#6803 · Fuad#6803 · Aaiden#6803 · Sanford#6803
Looking for what else is popular rather than what resembles Kj? See the current top 100.
Choosing between Kj and another name?
See them side by side — full stats, history and a gentle verdict.
Compare side by sideIn a hurry? Just pick a winner — one tap, no sign-up, and you see how everyone else voted.
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
No advertising trackers and no data sellinghow we handle your dataindependent and founder-run, about Name Battle