Boys' name · since 1956
Kaj
Since 1956, U.S. Social Security records show 515 babies named Kaj, peaking in 2006. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #7,764 of 45,481
- all-time among boys
- #12,253 of 13,930
- 2025 SSA year
- 515
- born since 1956
- 2000s
- peak decade
Kaj currently ranks #12253 among boys' names in America, with 515 babies recorded since 1956.
Social Security Administration records show Kaj recorded 515 times among boys since 1956, holding rank #12253 nationally today, ahead of 12% of boys, peaking in the 2000s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1956 to 2025.
- #7,764 of 45,481 all-time among boys
- #12,253 of 13,930 2025 SSA year
- 515 born since 1956
- 2000s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Kaj ranks #7,764 of 45,481 boys' names by all-time recorded births (highest first) and #12,253 of 13,930 among boys' names in 2025. 515 born since 1956, peaking in the 2000s.
- #7,764 of 45,481
- all-time among boys
- #12,253 of 13,930
- 2025 SSA year
- 515
- born since 1956
- 2000s
- peak decade
Kaj's 515 recorded births place it above 82.92% of the 45,481 boys names in the full SSA archive.
The state file records this name in 1 jurisdictions, led by California.
How Kaj compares
515 Top 44% higher than 56% of 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Kaj's all-time total is 40% above the median boys name, and Liam still leads by a wide margin.
| Metric | Kaj | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 515 | 369 | 358,536 |
| Peak-year births | 20 | 34 | 22,252 |
Kaj's usage pattern, beyond the headline number
Kaj splits its recorded history at 2000: 63% of all births land in the more recent half, 37% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1956 (5 births) -- compare that against the 2006 peak of 20 for a sense of just how much the name's popularity has swung.
Kaj popularity over time
Annual U.S. births registered with the Social Security Administration · 1956–2025
- Peak year (2006)
- 20
- Annual births at peak, across 70 years of records
Kaj by decade
2000s is the heaviest window (140 births, 27% of the file).
2000s was Kaj's strongest decade.
140 babies received the name during that ten-year window, about 27% of all-time use.
Kaj births by decade
Total births in each ten-year window
- 1950s 5
1950s
5 births
- 1960s 30
1960s
30 births
- 1970s 26
1970s
26 births
- 1980s 54
1980s
54 births
- 1990s
1990s
74 births
- 2000s
2000s
140 births
- 2010s
2010s
134 births
- 2020s 52
2020s
52 births
What this shows Peak: 2000s at 140 births (27% of all-time use).
How Kaj compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Kaj's total volume
Kaj by state
Where Kaj concentrates geographically, total births since 1956
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 26 | 5.0% |
26 of 515 births nationwide.
Frequently Asked Questions
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What to do with Kaj's data
- Kaj's usage has stayed within range of its 2000s decade-level peak (140 total births) through the 2020s (52) -- a comparatively stable name, not a fading trend.
- California records the most Kajs (26 births) -- see the full state breakdown if geography matters to your decision. California names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Kaj
Nearby Names Like Kaj
Names with a similar sound, spelling, or feel to Kaj
Compare Kaj side by side: Kaj vs Kajuan Kaj vs Kaje Kaj vs Kajon
Related Names
Names with a similar popularity rank to Kaj
Nationwide names with similar peak year or record span
Two nationwide peer axes for Kaj: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2006)
Similar record span (~69 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1956–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Kaj draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.