boy's name
Kj
- Gender Boy
- Letters 2
- Popularity Rare
- Births on record 229
Kj is a boy's name. In 2025 it was given to 12 babies in the United States. It is a rare choice.
- Peaked in 2021, when 21 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 276,319 babies in the United States is given this name.
- First appears in US birth records in 1993.
Kj over time
Births per decade in the United States, 1990s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1990s | 6 |
| 2000s | 40 |
| 2010s | 98 |
| 2020s (to 2025) | 85 |
How popular is Kj?
In 2025, Kj was given to 12 babies in the United States. It is a rare choice.
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Kj
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Kj also like
Names whose popularity has risen and fallen in step with Kj over the last century — the same taste, a different name.
Sibling names for Kj
Names from the same era that won't rhyme or share an initial with Kj — the two things that make a sibling set grate.
Common questions about Kj
How popular is the name Kj?
In 2025, Kj was given to 12 babies in the United States. It is a rare choice.
Is Kj a girl's or a boy's name?
Kj is given almost entirely to boys in birth records.
When was Kj most popular?
Kj peaked in 2021, when 21 babies were given the name. It has been rising over the past decade.
Is Kj a good name?
That is not something records can settle, but they can tell you what you would be choosing. Kj currently ranks #7,009 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.