Baby Names US
girls' name ★ peaked 2009

Kaja

Meaning Kaja or Kája is a given name and surname Gender Girl Rank 2025 #6,973

Kaja or Kája is a given name and surname.

Rank 2025
#6,973
among girls · ↓698 vs 2024
Babies in 2025
16
named Kaja
How common
1 in 100,454
girls born in 2025
Peak year
2009
25 babies
All-time total
711
#9,419 all-time among girls
First recorded
1957
in Social Security records

Kaja popularity over time

711 babies have been named Kaja since 1957, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
00.010.010.0218801900192019401960198020002020Peak 2009Girls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Per year Change Best rank
1880s – – – –
1890s – – – –
1900s – – – –
1910s – – – –
1920s – – – –
1930s – – – –
1940s – – – –
1950s 5 1 – #6,540
1960s 17 2 +240% #6,127
1970s 21 2 +24% #5,968
1980s 85 9 +305% #5,401
1990s 141 14 +66% #5,667
2000s 175 18 +24% #5,396
2010s 175 18 0% #5,473
2020s (to 2025) 92 15 -12% #6,275

The story of Kaja

Kaja is rare for girls in the United States, ranked #6,973 in 2025 with 16 babies given the name. It is currently rising compared with a decade ago.

Since 1957, 711 American babies have been named Kaja. Its peak came in 2009, when 25 newborns received the name, the signature sound of the 2000s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kaja stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Kaja?

The median living Kaja is about 21 years old; half are between 11 and 31. An estimated 700 people named Kaja are alive in the United States today.

median 21 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Kaja year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank
2025 16 #6,973
2024 19 #6,275
2023 18 #6,536
2022 13 #8,265
2021 14 #7,817
2020 12 #8,659
2019 13 #8,352
2018 13 #8,347
2017 19 #6,402
2016 18 #6,776
2015 18 #6,849
2014 16 #7,472
2013 13 #8,799
2012 25 #5,473
2011 18 #6,972
2010 22 #6,054
2009 25 #5,621
2008 12 #9,763
2007 14 #8,766
2006 24 #5,626
2005 9 #11,340
2004 21 #5,844
2003 17 #6,739
2002 18 #6,260
2001 14 #7,512
2000 21 #5,396
1995 14 #6,415
1990 16 #5,667
1985 8 #7,894
1980 5 #11,096
1975 – –
1970 – –
1965 – –
1960 – –
1955 – –
1950 – –
1945 – –
1940 – –
1935 – –
1930 – –
1925 – –
1920 – –
1915 – –
1910 – –
1905 – –
1900 – –
1895 – –
1890 – –
1885 – –
1880 – –

Famous people named Kaja

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Kaja Kallas Kaja Kallas Estonian politician and diplomat (born 1977) Contemporary

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Kaja, drawn from the same Social Security data as the charts above.

How old is the average Kaja?

The median living Kaja is about 21 years old. Half of all living Kajas are between 11 and 31 years old.

How many people named Kaja are alive today?

An estimated 700 people named Kaja are alive in the United States, based on 711 recorded births and Social Security life tables.

What does the name Kaja mean?

Kaja or Kája is a given name and surname.

How popular is the name Kaja in 2025?

Kaja ranked #6,973 among girls' names in the United States in 2025, with 16 babies given the name, according to Social Security Administration data.

How many people are named Kaja?

711 babies have been named Kaja in the United States since 1957, based on Social Security card applications.

When was the name Kaja most popular?

Kaja peaked in 2009, when 25 newborns received the name.

Is Kaja a boy or girl name?

Kaja is overwhelmingly a girl's name: 100% of babies with the name.

Is the name Kaja rising or falling?

Kaja is on the rise, noticeably more popular now than a decade ago.

Who are famous people named Kaja?

Well-known people named Kaja include Kaja Kallas (politician).

Names like Kaja

Names that sound and feel close to Kaja: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Kaja with similar names → More names starting with K →