Kaj is a boy name with a rare feel, drawn from real birth records. Below you'll find how many babies have been named Kaj across the United States, UK, Ireland and New Zealand, how popular Kaj has been over the decades, and the year it peaked.
| Country | Births on record |
|---|---|
| United States since 1880 | 515 births |
| England & Wales since 1996 | 42 births |
| Ireland since 1964 | 3 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Kaj per year, United States (1956 to 2025). United States peaked in 2006 (20/yr) · England & Wales peaked in 1996 (4/yr) · Ireland peaked in 2023 (3/yr).
Kaj is a rare baby name in the United States. It was most common in 2006, when it ranked #10,807 nationally (given to 23 babies that year).
Cj · Kage · Kaija · Koji · Keja · Kaja · Kj · Kajah
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