Kaja
Kaja was given to 16 girls in 2025, #6,971 among girls’ names; 711 Americans have been recorded with it since 1957 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kaja by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Kaja mean?
Wiktionary, Polish section
Kaja is “a female given name from Latin”
Learned borrowing from Latin Cāia. Doublet of Gaja.
/ˈka.ja/
Meaning: Wiktionary, Polish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Kaja?
#6,971 among girls’ names, 2025
Kaja fell from #6,846 in 2015 to #6,971 in 2025 among girls’ names; its share of girls born fell from 10.1 to 10.0 per million.
25 babies in 2009, the peak
Kaja peaked in 2009, when 25 girls were given it, #5,619 among girls’ names. The 16 births of 2025 are 64% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 16 | #6,971 | 10.0 |
| 2024 | 19 | #6,272 | 11.7 |
| 2023 | 18 | #6,531 | 11.2 |
| 2022 | 13 | #8,260 | 7.9 |
| 2021 | 14 | #7,812 | 8.5 |
| 2020 | 12 | #8,654 | 7.4 |
| 2019 | 13 | #8,347 | 7.7 |
| 2018 | 13 | #8,342 | 7.6 |
| 2017 | 19 | #6,398 | 11.0 |
| 2016 | 18 | #6,773 | 10.2 |
Every recorded year (52)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 18 | #6,846 | 10.1 |
| 2014 | 16 | #7,469 | 9.0 |
| 2013 | 13 | #8,794 | 7.4 |
| 2012 | 25 | #5,471 | 14.2 |
| 2011 | 18 | #6,969 | 10.2 |
| 2010 | 22 | #6,052 | 12.4 |
| 2009 | 25 | #5,619 | 13.6 |
| 2008 | 12 | #9,759 | 6.3 |
| 2007 | 14 | #8,762 | 7.3 |
| 2006 | 24 | #5,625 | 12.6 |
| 2005 | 9 | #11,334 | 4.9 |
| 2004 | 21 | #5,840 | 11.4 |
| 2003 | 17 | #6,734 | 9.3 |
| 2002 | 18 | #6,255 | 10.0 |
| 2001 | 14 | #7,505 | 7.8 |
| 2000 | 21 | #5,391 | 11.6 |
| 1999 | 18 | #5,765 | 10.1 |
| 1998 | 18 | #5,684 | 10.2 |
| 1997 | 15 | #6,314 | 8.6 |
| 1996 | 10 | #8,456 | 5.7 |
| 1995 | 14 | #6,410 | 8.0 |
| 1994 | 13 | #6,853 | 7.3 |
| 1993 | 12 | #7,230 | 6.6 |
| 1992 | 14 | #6,452 | 7.6 |
| 1991 | 11 | #7,632 | 5.9 |
| 1990 | 16 | #5,662 | 8.4 |
| 1989 | 11 | #7,186 | 6.0 |
| 1988 | 10 | #7,366 | 5.6 |
| 1987 | 12 | #6,088 | 6.9 |
| 1986 | 9 | #7,385 | 5.2 |
| 1985 | 8 | #7,891 | 4.6 |
| 1983 | 7 | #8,430 | 4.2 |
| 1982 | 10 | #6,567 | 5.9 |
| 1981 | 13 | #5,400 | 7.8 |
| 1980 | 5 | #11,094 | 3.0 |
| 1978 | 7 | #8,005 | 4.6 |
| 1974 | 9 | #5,967 | 6.1 |
| 1972 | 5 | #8,828 | 3.3 |
| 1967 | 5 | #7,251 | 3.0 |
| 1966 | 6 | #6,126 | 3.5 |
| 1961 | 6 | #6,171 | 3.0 |
| 1957 | 5 | #6,538 | 2.4 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Kaja a boy’s or a girl’s name?
Kaja has been recorded only for girls: SSA lists no boys with the name in 52 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Kaja: the SSA national file counts each sex separately.
How many people are named Kaja, and how old are they?
An estimated 698 Americans named Kaja and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 22 years old and half are between 12 and 32. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 730 people named Kaja (710 women and girls, 20 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 612 born in the U.S. The Census count is 19% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 4 names spelled alike, given to 1,965 babies since 1880, Kaja is the second most given (36% of them). In 2025 it was given to 16 of their 35 babies (46%), the most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Kaja
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Kaja and names like it
- Compare Kaja and KaijaBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sKaja peaked in 2009.
- California’s most given namesThe state where SSA recorded the most babies named Kaja since 1910.
- Latin namesWiktionary’s origin for Kaja: every such name, by how often it is given.
- The top names of 2009The year the most babies were named Kaja.
- The names of Generation ZMost people named Kaja alive today were born 1997-2012.
- Names starting with KMost given first.